$7\left(z+5\right)$
$\left(2+m+n\right)\left(2-m-n\right)$
$\left(14d+32m\right)^3$
$\cos\left(x\right)\csc\left(x\right)\tan\left(x\right)+\sin\left(x\right)\sec\left(x\right)\tan\left(x\right)$
$7z-\left[2z-\left(3z+7\right)\right]$
$\lim_{x\to1}\left(\frac{\ln\left(x\right)}{x^3-3x\:+2}\right)$
$-4\left(-3z-2\right)-9$
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