$25+30x^2+9x^2$
$\lim_{x\to0}\left(\frac{sec^2\left(-x+2\right)}{x^2-4\:\:}\right)$
$x^2+24-144$
$\ln\sqrt{x-2}=7$
$\int\frac{1}{\sqrt{e^{2x}+36}}dx$
$\left(3x+y-2\right)-\left(4x+82\right)-\left(2x-5y-32\right)$
$\frac{4x^2-16}{x-2}$
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