$\frac{1}{2}\left(-4\right)^2\:-3$
$y''+7y'+12y=0$
$0.58\:and\:\frac{4}{5}$
$-9-4+7\cdot5$
$\frac{d}{dx}x^2y^3-5xy^2+y=1$
$\frac{e^{-x}-1}{\left(e^{-x}+x\right)^2}$
$\int\frac{x+2}{x^3+x^2-12x}dx$
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