Quay lại đáp án

	6	thêm 79 ký tự trong đáp án		Sửa 12-06-16 03:58 PM Băng 1
Từ GT ta có :a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0Mà a−c≠0⇒b2=ac" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a−c≠0⇒b2=aca−c≠0⇒b2=acMà a,b,c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a,b,ca,b,c là các số nguyên tố⇒a=b=c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a=b=c⇒a=b=c(vô lí)&#x21D2;a2+b2+c2" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a2+b2+c2⇒a2+b2+c2 không thể là số nguyên tố Từ giả thiết ta cóa(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0Mà a−c≠0⇒b2=ac" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a−c≠0⇒b2=aca−c≠0⇒b2=acMà a,b,c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a,b,ca,b,c là các số nguyên tố⇒a=b=c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a=b=c(vô lí)⇒a=b=c⇒a2+b2+c2" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a2+b2+c2⇒a2+b2+c2 không thể là số nguyên tố Từ GT ta có :a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0Mà a−c≠0⇒b2=ac" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a−c≠0⇒b2=aca−c≠0⇒b2=acMà a,b,c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a,b,ca,b,c là các số nguyên tố⇒a=b=c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a=b=c⇒a=b=c(vô lí)&#x21D2;a2+b2+c2" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a2+b2+c2⇒a2+b2+c2 không thể là số nguyên tố

	5	bớt 77 ký tự trong đáp án
Từ giả thiết ta cóa(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0Mà a−c≠0⇒b2=ac" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a−c≠0⇒b2=aca−c≠0⇒b2=acMà a,b,c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a,b,ca,b,c là các số nguyên tố⇒a=b=c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a=b=c(vô lí)⇒a=b=c⇒a2+b2+c2" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a2+b2+c2⇒a2+b2+c2 không thể là số nguyên tố Từ GT ta có :a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0Mà a−c≠0⇒b2=ac" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a−c≠0⇒b2=aca−c≠0⇒b2=acMà a,b,c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a,b,ca,b,c là các số nguyên tố⇒a=b=c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a=b=c⇒a=b=c(vô lí)&#x21D2;a2+b2+c2" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a2+b2+c2⇒a2+b2+c2 không thể là số nguyên tố Từ giả thiết ta cóa(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0Mà a−c≠0⇒b2=ac" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a−c≠0⇒b2=aca−c≠0⇒b2=acMà a,b,c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a,b,ca,b,c là các số nguyên tố⇒a=b=c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a=b=c(vô lí)⇒a=b=c⇒a2+b2+c2" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a2+b2+c2⇒a2+b2+c2 không thể là số nguyên tố

	4	thêm 87 ký tự trong đáp án		Sửa 11-06-16 04:11 PM Băng 1
Từ GT ta có :a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0Mà a−c≠0⇒b2=ac" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a−c≠0⇒b2=aca−c≠0⇒b2=acMà a,b,c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a,b,ca,b,c là các số nguyên tố⇒a=b=c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a=b=c⇒a=b=c(vô lí)⇒a2+b2+c2" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a2+b2+c2⇒a2+b2+c2 không thể là số nguyên tố Từ giả thiết ta cóa(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0Mà a−c≠0⇒b2=ac" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a−c≠0⇒b2=aca−c≠0⇒b2=acMà a,b,c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a,b,ca,b,c là các số nguyên tố⇒a=b=c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a=b=c⇒a=b=c⇒a2+b2+c2" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a2+b2+c2⇒a2+b2+c2 không thể là số nguyên tố Từ GT ta có :a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0Mà a−c≠0⇒b2=ac" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a−c≠0⇒b2=aca−c≠0⇒b2=acMà a,b,c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a,b,ca,b,c là các số nguyên tố⇒a=b=c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a=b=c⇒a=b=c(vô lí)⇒a2+b2+c2" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a2+b2+c2⇒a2+b2+c2 không thể là số nguyên tố

	3	bớt 7 ký tự trong đáp án		Sửa 11-06-16 04:10 PM Băng 1
Từ giả thiết ta cóa(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0Mà a−c≠0⇒b2=ac" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a−c≠0⇒b2=aca−c≠0⇒b2=acMà a,b,c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a,b,ca,b,c là các số nguyên tố⇒a=b=c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a=b=c⇒a=b=c⇒a2+b2+c2" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a2+b2+c2⇒a2+b2+c2 không thể là số nguyên tố Từ giả thiết ta cóa(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0Mà a−c≠0⇒b2=ac" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a−c≠0⇒b2=aca−c≠0⇒b2=acMà a,b,c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a,b,ca,b,c là các số nguyên tố⇒a=b=c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a=b=c(vô lí)⇒a=b=c⇒a2+b2+c2" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a2+b2+c2⇒a2+b2+c2 không thể là số nguyên tố Từ giả thiết ta cóa(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0Mà a−c≠0⇒b2=ac" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a−c≠0⇒b2=aca−c≠0⇒b2=acMà a,b,c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a,b,ca,b,c là các số nguyên tố⇒a=b=c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a=b=c⇒a=b=c⇒a2+b2+c2" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a2+b2+c2⇒a2+b2+c2 không thể là số nguyên tố

	2	bớt 77 ký tự trong đáp án		Sửa 11-06-16 04:10 PM Băng 1
Từ giả thiết ta cóa(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0Mà a−c≠0⇒b2=ac" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a−c≠0⇒b2=aca−c≠0⇒b2=acMà a,b,c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a,b,ca,b,c là các số nguyên tố⇒a=b=c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a=b=c(vô lí)⇒a=b=c⇒a2+b2+c2" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a2+b2+c2⇒a2+b2+c2 không thể là số nguyên tố Từ giả thiết ta cóa(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0Mà a−c≠0⇒b2=ac" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a−c≠0⇒b2=aca−c≠0⇒b2=acMà a,b,c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a,b,ca,b,c là các số nguyên tố⇒a=b=c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a=b=c⇒a=b=c⇒a2+b2+c2" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a2+b2+c2⇒a2+b2+c2 không thể là số nguyên tố Từ giả thiết ta cóa(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0Mà a−c≠0⇒b2=ac" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a−c≠0⇒b2=aca−c≠0⇒b2=acMà a,b,c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a,b,ca,b,c là các số nguyên tố⇒a=b=c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a=b=c(vô lí)⇒a=b=c⇒a2+b2+c2" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a2+b2+c2⇒a2+b2+c2 không thể là số nguyên tố

	1	tạo mới		Trả lời 10-06-16 10:59 AM Băng 1
Từ giả thiết ta cóa(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0a(c2+b2)=c(a2+b2)⇔ac2+ab2=ca2+cb2⇔(b2−ac)(a−c)=0Mà a−c≠0⇒b2=ac" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a−c≠0⇒b2=aca−c≠0⇒b2=acMà a,b,c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">a,b,ca,b,c là các số nguyên tố⇒a=b=c" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a=b=c⇒a=b=c⇒a2+b2+c2" role="presentation" style="display: inline-block; line-height: 0; font-size: 16.38px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; padding-top: 1px; padding-bottom: 1px; color: rgb(40, 40, 40); font-family: helvetica, arial, sans-serif; position: relative; background-color: rgb(255, 255, 255);">⇒a2+b2+c2⇒a2+b2+c2 không thể là số nguyên tố

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hoahoa.nhynhay: . 11/5/2018 1:39:46 PM
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