$\lim_{x\to-\infty}\left(\frac{4x+5}{5x^4+1}\right)$
$\int_{-3}^0\:9-x^2\:dx$
$\frac{dy}{dx}=\left(x+2\right)\left(x^2+3x+1\right)\:$
$4n\:-\:n$
$1^2-2$
$3\left(x-1\right)-2\left(1-x\right)$
$\lim_{x\to1}\left(\frac{e-e^x}{x-1}\right)$
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