gai cac he phuong trinh
a/
$\left\{ \begin{array}{l} \sqrt{x} + \sqrt{y} = 9\\ \sqrt[3]{x} + \sqrt[3]{y} = 5\end{array} \right.
$b/
$\left\{ \begin{array}{l} \sqrt{x+ \frac{1}{y}} + \sqrt{x + y - 3} = 3\\ 2x + y + \frac{1}{y} = 8\end{array} \right.
$c/
$\left\{ \begin{array}{l} \sqrt{x} + 2\sqrt[4]{y} = 1\\ x + 2y = 1 \end{array} \right.
$d/
$\left\{ \begin{array}{l} (2x + y)^{2} - 5(4x^{2}- y^{2}) + 6(2x - y)^{2} = 0\\ 2x + y + \frac{1}{2x - y}= 3\end{array} \right.
$
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gai cac he phuong trinh
a/ \left\{ \begin{array}{l} \sqrt{x} + \sqrt{y} = 9\\ \sqrt[3]{x} + \sqrt[3]{y} = 5\end{array} \right.b/
\left\{ \begin{array}{l} \sqrt{x+ \frac{1}{y}} + \sqrt{x + y - 3} = 3\\ 2x + y + \frac{1}{y} = 8\end{array} \right.c/
\left\{ \begin{array}{l} \sqrt{x} + 2\sqrt[4]{y} = 1\\ x + 2y = 1 \end{array} \right.d/
\left\{ \begin{array}{l} (2x + y)^{2} - 5(4x^{2}- y^{2}) + 6(2x - y)^{2} = 0\\ 2x + y + \frac{1}{2x - y}= 3\end{array} \right.
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gai cac he phuong trinh
a/
$\left\{ \begin{array}{l} \sqrt{x} + \sqrt{y} = 9\\ \sqrt[3]{x} + \sqrt[3]{y} = 5\end{array} \right.
$b/
$\left\{ \begin{array}{l} \sqrt{x+ \frac{1}{y}} + \sqrt{x + y - 3} = 3\\ 2x + y + \frac{1}{y} = 8\end{array} \right.
$c/
$\left\{ \begin{array}{l} \sqrt{x} + 2\sqrt[4]{y} = 1\\ x + 2y = 1 \end{array} \right.
$d/
$\left\{ \begin{array}{l} (2x + y)^{2} - 5(4x^{2}- y^{2}) + 6(2x - y)^{2} = 0\\ 2x + y + \frac{1}{2x - y}= 3\end{array} \right.
$
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