$16x^2-128x$
$\int\frac{2x-1}{\left(x-1\right)\left(x^2-2x+1\right)}dx$
$\left(cos\left(x\right)\right)^3\sin\left(x\right)+cos\left(x\right).\left(\sin\left(x\right)\right)^3=\frac{1}{2}$
$\cos2x-\cos x=2$
$\:\frac{x^3+5x^2+5x-3}{x-3}$
$\lim_{x\to2}\left(x^4-x^2+6\right)$
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