$\frac{d}{dx}\left(\frac{x\left(1+x^2\right)^2}{\sqrt{x^2+2}}\right)$
$2\left(x-\frac{1}{5}x^2\right)^3$
$2\left(x-3\right)<5\left(x-7\right)-1$
$\left(x+a\right)\left(x\right)$
$\lim_{x\to-6}\:\frac{x^2-36}{x^2+12x+36}$
$\left(5+x^2\right)^3$
$\int\frac{x^3}{\left(7-3x^4\right)^{\frac{3}{2}}}dx$
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