$\lim_{x\to0}\left(1-t\left(x\right)\right)$
$\frac{dy}{dx}=4y+9$
$\left(5x^2-2x\right)^2$
$7\:cos\:\left(2x\right)\:=\:4$
$5\left(x+3\right)+13<x+88$
$\lim_{x\to-4}\left(-x-4\right)$
$32-\left(-14+7-4\right)-\left(+4\right)$
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