$2a^3\:+\:2ab^2$
$\frac{x^2-3x-10}{x}$
$-\left(-\left(-7\right)\right)$
$\lim_{x\to0}\left(\frac{e^{x-1}-1}{\ln\left(x\right)}\right)$
$x^2-20x+200$
$\frac{1}{1-\cos\left(x\right)}+\frac{1}{1+cos\left(x\right)}=\frac{2}{sin^2\left(x\right)}$
$\sqrt{u+8}=5$
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