$x^2+18x+2$
$4x\frac{dy}{dx}+y=3xy^{-2}$
$x^2-22x$
$\tan\left(\arctan\left(\frac{1}{3}\right)\:+\:\arctan\left(\frac{1}{7}\right)\right)$
$4x^2-12x>-8$
$\left(4m-3n^3\right)^3$
$\left(2f+3\right)\left(2f-5\right)$
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