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Member Since 04-10-2015
Offline Last Active 24-01-2016 - 08:12

05-10-2015 - 22:13

Giải hệ phương trình:

$\left\{\begin{matrix} &y(x^{^{2}}+1)=2x(y^{^{2}}+1) & \\ &(x^{2}+y^{2})(1+\frac{1}{x^{2}y^{2}})=16 & \end{matrix}\right.$

04-10-2015 - 22:55

Giải hệ phương trình:

$\left\{\begin{matrix} &(x-y)^{^{2}}+x+y=y^{2} & \\ & x^{4} -4x^{^{2}}y+3x^{2}=-y^{^{2}}& \end{matrix}\right.$

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