$\left(\frac{x^2-25\cdot\:\:x^2-10x+25}{x+5}\right)$
$\left(\frac{6}{3}\right)^{-2}$
$-5-5+4+-4+4$
$\frac{2}{3}x=8$
$x^2+54x+648$
$\frac{1}{3}x+5-2x$
$\frac{7}{9}x^{\frac{7}{9}-1}$
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