giai he phuong trinh
a,
$\left\{ \begin{array}{l} xy+ x+ 1= 7y\\ x^{2}y^{2} + xy+ 1= 13y^{2}\end{array} \right.
$b,
$ \left\{ \begin{array}{l} 9y^{3}(3x^{2}-1)= -125\\ 45x^{2} y+ 75x= 6y^{2}\end{array} \right.
$
Hệ phương trình
giai he phuong trinh
a, \left\{ \begin{array}{l} xy+ x+ 1= 7y\\ x^{2}y^{2} + xy+ 1= 13y^{2}\end{array} \right.b, \left\{ \begin{array}{l} 9y^{3}(3x^{2}-1)= -125\\ 45x^{2} y+ 75x= 6y^{2}\end{array} \right.
Hệ phương trình
giai he phuong trinh
a,
$\left\{ \begin{array}{l} xy+ x+ 1= 7y\\ x^{2}y^{2} + xy+ 1= 13y^{2}\end{array} \right.
$b,
$ \left\{ \begin{array}{l} 9y^{3}(3x^{2}-1)= -125\\ 45x^{2} y+ 75x= 6y^{2}\end{array} \right.
$
Hệ phương trình