$\lim_{x\to2}\left(\frac{\sin\left(\pi x\right)}{\left(x-2\right)\left(\cos\left(x\pi\right)\right)}\right)$
$1+\tan x+\sec x$
$\left(5x+7\right)\left(5x+4\right)+\left(3x-2\right)\left(3x+7\right)$
$6t-8=4t-2$
$\:x^3+\:2x^2-\:45x\:-\:126$
$\left(x+4\right)^2-3=6$
$\frac{cosq}{1+sinq}\:+\:tanq\:=\:secq$
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