$4\::\:-2\:=\:$
$\int x^{\frac{-3}{2}}\ln\left(x\right)^2dx$
$x^3-14x$
$-3+4x-7x^2$
$\frac{4n^3+n^2+3n}{n+1}$
$\sqrt{12}+4senx=0$
$-3d-5d$
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