$y'=e^{-y}\left(x+e^{-x}\right)$
$\frac{x^2+5x+2}{x}$
$\lim_{x\to-4}\left(\frac{x^3-16x}{x^2+6x+8}\right)$
$\frac{dy}{dx}=\frac{3y^2}{x^2}$
$-19\:-\:\left(-45\right)\::\:\:\left(6\:-\:3\right)\:$
$3a^5-2a^4-8a^3$
$\left(2f^2+g\right)^2$
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