$\int_{-2}^{-3}\left(\frac{1}{x^2-1}\right)dx$
$\frac{d}{dx}\left(arc\:cos\left(\sqrt{1-x}\right)\right)$
$\lim_{x\to8}\left(\frac{x^2-13x+40}{x-8}\right)$
$a^3-x^3$
$\left(\frac{x^4y^2}{3}-\frac{y^5}{4}\right)^2$
$\sqrt{h+5}-2.\sqrt{h+5}+2$
$\sec\left(x\right)\left(1-\sin^2\left(x\right)\right)=\tan\left(x\right)$
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