$\:\frac{8v^3+27w^6}{2v+3w^2}$
$x^2-21x+121$
$\frac{d}{dx}x^5-2x^3+x$
$\tan x+\tan y=\tan x\tan y\left(\cot x+\cot y\right)$
$55+275$
$\int\frac{1}{x^2-3x-10}\:dx$
$\frac{dy}{dx}=\frac{-y^2}{x}$
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