$\lim_{x\to2}\frac{\left|x^2-x-2\right|}{x-2}$
$y^2+3x=8$
$\frac{\left(1+\cos\left(x\right)\right)}{1-\cos\left(x\right)}=\frac{1}{\left(\cos\left(x\right)-\csc\left(x\right)\right)^2}$
$\int x\cdot\cos\left(x\right)\log\left(x^2\right)$
$\int_0^{0.2}2\pi\left(xe^{5x}+x\right)dx$
$\frac{1}{4}-\frac{1}{a^8}$
$\frac{8^9}{8^7}$
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