$\frac{\left(x+4\right)^2\left(x-1\right)}{x^2-16}$
$x^3\left(cos\frac{1}{x}-2\right)$
$-2\left(4u-w-6\right)$
$2a-b;\:a=2\:;b=4$
$25x^2+10x-1$
$\frac{d}{dx}\left(2xy^2+4xy-y+2x+1\right)^{-1}\left(-y^2-2y-x-2\right)$
$\int_{-2}^22x\left(3x^2+5\right)dx$
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