$\frac{x^2+4x+4}{x^2-1}$
$\left(11b^2-4b+7\right)-\left(b^2+8b-9\right)$
$14-16+8+12+8+6$
$\left(2y^3-x^3\right)dx+3xy^2dy=0$
$\lim_{x\to12}\left(\frac{x^2-144}{\sqrt{x+13}-5}\right)$
$\int\left(x^6+x^{10}\right)^{.5}dx$
$4\sqrt{x}+\left(\frac{8}{3\sqrt{x}}\right)$
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