$\lim_{x\to2}\left(\left(x-2\right)\cdot\frac{e^x}{x^3-14x^2+44x-40}\right)$
$-\lim_{y\to0}\left(\frac{sen\left(cosy\right)}{y^2}\right)$
$\int\left(x-1\right)\cdot e^{-x}dx$
$1\:-3\:1\:3$
$\lim_{x\to\infty}\frac{x^2+3x+2}{1+x^2}$
$-55\:-\:\left(-15\right)$
$\left(x-5\right)\left(3x+2\right)\left(x+5\right)$
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