$\int\:8x\:e^{9x}\:dx$
$\frac{3}{2}-2\frac{1}{4}+1$
$\left(-5x\right)^{-2}$
$\frac{2x^2-4x+1}{2x^3-x^2-2x+1}$
$n^2+3n-n+2n^2+7$
$2x^2+11+81$
$\left(y^3-7\right)\left(y^3-4\right)$
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