$x^2=-5x-6$
$-m^7n^9+072m^7$
$\frac{\csc\left(u\right)}{\cot\left(u\right)+\tan\left(u\right)}$
$\frac{2n^3+20n^2+n}{10n^2}$
$\frac{b}{9}=-7$
$\left(x^2-1\right)\frac{dy}{dx}+2y=\left(x^2+1\right)^2$
$\int_{-3}^2\left(-2x+1\right)e^{-x}dx$
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