Giải hệ PT sau:
$\left\{\begin{matrix} x^2y^2+2x+4=7y^2\\ x^3y^3-10y^3x-20y^2+21y^3=-8 \end{matrix}\right.$
$\left\{\begin{matrix} x^2y^2+2x+4=7y^2\\ ... \end{matrix}\right.$
Started By mango, 02-04-2014 - 12:52
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