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Real numbers  and  satisfy 

\(\begin{align*} x + xy^2 &= 250y, \\ x - xy^2 &= -240y. \end{align*}\)

 

Enter all possible values of  separated by commas.

 

Please help!!!

 Sep 3, 2020
 #1
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The possible values of x are 7 and - 7.

 Sep 3, 2020

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