$x^2+20x-10$
$\lim_{x\to0}\left(x^{sinx\left(x\right)}\right)$
$\left(5a+11\right)\left(5a+13\right)$
$-2b-9b-2b$
$\left(-\frac{3}{3}m^{2}n+3mn^{2}\right)$
$\frac{3\sec\:\left(\theta\:\right)+3}{\sec\:^2\left(\theta\:\right)-1}=\frac{3}{\sec\:\left(\theta\:\right)-1}$
$3n+5-2n$
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