$\frac{25-36x^2}{5-x^2}$
$\int_0^{\infty}36xe^{-3x}dx$
$56^2-49^2$
$x+x-x+x-x-x+x-x-x-x$
$\lim_{x\to0}\left(\frac{1}{x\ln\left(x\right)}\right)$
$\lim_{x\to2}\:\:\:\:\:\:\frac{\sqrt{2x^2+3x+1}}{x^2-2x-3}$
$\left(x-5\right)\left(x+2\right)\left(2x-3\right)$
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