Find y(y+x) y^{(y+x)} ?

Algebra Level 2

{7x5y=1757y5x=245 \begin{cases} 7^x \cdot 5^y = 175 \\ 7^y \cdot 5^x = 245 \end{cases}

Let xx and yy be real numbers satisfying the system of equations above.

Find yx+yy^{x+y} .

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