$\frac{\tan\left(x\right)+1}{1-\tan\left(x\right)}=6\tan\left(x\right)$
$21-8w\:+\:24\:+\:3\:+\:7w$
$\frac{-2}{x-2}+\frac{1}{x+4}=1$
$\int\frac{x^2-1}{\sqrt{x^2+1}}dx$
$\int_{-1}^1\left(\frac{x}{\sqrt{4x^4}\:-10}\right)dx$
$\frac{d}{dx},=2x^2-2x+6$
$\left(7x\right)^0$
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