$\left(1-x^8\right)^3$
$3^4\cdot3^{-1}$
$25-4x^2y^2$
$\frac{x^3-2x^2+7x-2}{x^2+1}$
$x+86=47$
$\frac{2}{\frac{1}{3}}$
$n^2+19n+60$
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