$r^2+22r$
$cosx=\frac{2}{3}\:$
$\int\:\:z^8+\frac{1}{\left(9-z\right)^4}dz$
$2\left(x+4\right)=3\left(x-1\right)$
$\frac{x^3}{1-x}$
$\lim_{x\to\infty}\left(\frac{\sin\left(1\:+\:4\pi x\right)}{\cos\left(1\:+\:\pi x\right)}\right)$
$\int v\sqrt{1-v^2}dv$
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