$x^2+18x+121$
$\int_{-\infty}^{-3}\left(\frac{32}{x^2-4}\right)dx$
$\frac{1}{4}x^2+3x-2\cdot6x^2-1$
$\left(3x-11\right)\left(3x+7\right)^2$
$b^3-3b+2$
$\frac{12x\:+\:8}{3x^2+4x}$
$5a-3b+2a+7b-4a-4b$
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