$\frac{1-n^3}{1-n}$

$13x+221$

$\left(-10\right)\left(7\right)\left(-1\right)\left(-3\right)$

$\frac{d^2}{dx^2}\left(16x^3-32x^2\right)$

$\int\left(\sqrt{v^{-3}}\right)dv$

$5\left(-3\right)^2+2\left(2\right)\left(-1\right)+3\left(-4\right)$

$\int\frac{xe^{x^2}}{\left(x^2+1\right)^2}dx$