O
oreca


$ \left\{\begin{matrix}
\(x+y)(1+\frac{1}{xy})=5\\
(x^2+y^2)(1+\frac{1}{x^2y^2})=49
\end{matrix}\right. $
tks
\(x+y)(1+\frac{1}{xy})=5\\
(x^2+y^2)(1+\frac{1}{x^2y^2})=49
\end{matrix}\right. $
tks
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