$x^2+2x\le0$
$\left(\frac{1}{\left(x-2\right)}-\frac{4}{x^2-4}\right)$
$120m^3-12m^2+24m$
$\frac{d}{dx}p^3-5p^2+500$
$-\left(x+4\right)^2$
$u+15\ge14$
$6-4x-6y$
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