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System of equations..

Algebra Level 3

\[\large \begin{cases} \dfrac{x+y}{x-y} + \dfrac{x-y}{x+y} = \dfrac 52 \\ x^2+y^2 = 90 \\ \end{cases}\]

Find the minimum value of \(y-x\)

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by Munem Shahriar

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