$\int_1^{\infty}\left(\frac{1}{x^2+x^3}\right)dx$
$a^2-2a-24$
$\frac{d^2}{dx^2}\left(5y^2-xy+2x^2=8\right)$
$\left(-4\right)-\left(-31\right)$
$\int\left(\frac{4x-3}{\left(x+1\right)\left(x-4\right)\left(x+4\right)}\right)dx$
$35+\left(-55\right)+39\:+7$
$-402+205$
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