$\left(3x-11\right)\left(3x+7\right)$
$5\cos\left(x-40\right)=2$
$f\left(x\right)=\frac{4}{1-x^3}$
$\lim_{x\to0}\left(\sin x\right)$
$\int\:\left(x^2+1\right)\cos2x\:dx$
$19m^3n\cdot6m^2n^3$
$500-\left(-18\right)$
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