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bedepzai

Member Since 12-01-2015
Offline Last Active 21-01-2015 - 15:02

Posted by bedepzai on 12-01-2015 - 02:31

$\left\{\begin{matrix} x(x+y)^{2}+x^{2}=y^{2}-2 & & \\ y^{2}+xy+(x+y-1)\sqrt{x+y}=2x+2 & & \end{matrix}\right.(x,y\in \mathbb{R}).$

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