\left\{ \begin{array} { l } { x^2+y^2=6}\\ { 2x^2 Y^2=4} \end{array} \right.

Введите вашу математическую задачу... \left\{ \begin{array} { l } { x^2+y^2=6}\\ { 2x^2-y^2=4} \end{array} \right.

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