$\lim_{x\to0}\left(\frac{e^x-1-\cos\left(x\right)}{sin^2x}\right)$
$\int\:\frac{1}{x^2\sqrt{5-t^2}}\:dx$
$x^2-7x-120$
$7-3mk+4km+4$
$63\le-4x-17$
$59-\left(-32\right)$
$\lim_{x\to-1}\left(\frac{3x^4+2x^3+5x+4}{x+1}\right)$
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