$-111+-385$

$\frac{3x^3-17x^2+27x+18}{x-4}$

$\sqrt{\left(\left(2.10^{-27}\right)\left(4\cdot10^6\right)\right)}$

$\frac{1}{9}\int xe^xdx$

$\lim_{x\to4}\left(x^2+3x-1\right)$

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

$\frac{d}{dx}\left(0\:=\:y^2\:+\:x^2\:-\:2yxcos\left(t\right)\right)$