$\left\{\begin{matrix} & (4-y)\sqrt{x-2}+\sqrt{7-2y}=\sqrt{85-50x-7y+13y^{2}-x^{2}} & \\ & \sqrt{2x^{2}+3xy+4y^{2}}+\sqrt{4x^{2}+3xy+2y^{2}}=3(x+y) & \end{matrix}\right.$
anhmattroi97
anhmattroi97
Member Since 31-05-2016Offline Last Active 12-07-2016 - 09:09