$\int\frac{2x+3}{\left(x^2+2x+4\right)}dx$
$\int\frac{x^2}{x^2+3x+2}dx$
$e^{-x^2}\cdot\:e^{-e^{a\cdot\:x}}$
$\frac{1}{x}\left(\frac{dy}{dx}\right)=1+y^2$
$x^2-3x-2$
$-5.398+0.46$
$\left(-3a^{2x-4}b^{3x+1}\right)\left(-2a^{x+1}b^{2x-3}\right)$
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