$15x^2-22-5$
$64x^4-16$
$\lim_{x\to\infty}\left(x\cdot tan\left(\frac{180}{x}\right)\right)$
$\int_0^1\left(\frac{4r}{\sqrt{1-r^4}}\right)dr$
$2\:-m\:+\:10\:-10m$
$3x^2+7x-20$
$\lim_{x\to3}\left(7-2x\right)^{\frac{1}{x-3}}$
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