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$\left\{ \begin{align} & xy=2x-y \\ & 2{{x}^{3}}+{{y}^{3}}=-2 \\ \end{align} \right.$

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vanhanqct

vanhanqct

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$\left\{ \begin{align} & xy=2x-y \\ & 2{{x}^{3}}+{{y}^{3}}=-2 \\ \end{align} \right.$


Edited by vanhanqct, 04-10-2014 - 16:43.






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