$cotx=sinxsin\left(\frac{\pi\:}{2}-x\right)+cos^2x\left(\frac{1}{tanx}\right)$
$\int\left(xsin\left(x^2+\pi\right)\right)dx$
$\lim_{x\to-\infty}\left(\frac{x}{x+5}\right)$
$y^2+5y-14$
$\sqrt[4]{48xy^4}-y\sqrt[4]{768x}$
$\frac{8x^5+1}{2x^2-1}$
$-2\:\left(5\right)\:\left(-1\right)\left(-3\right)$
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