$2\left(-3x+2\right)+\left(-3x+2\right)\left(4x\right)$

$70+1+\left(-2\right)-2$

$2\left(3x\:+\:3\right)\:-\:4\left(5x\:-\:3\right)\:=\:x\left(x\:-\:3\right)\:-\:x\left(x\:+\:5\right)\:$

$\int\frac{1}{\sqrt{9e^{-2x}-1}}dx$

$\lim_{x\to0}\left(\frac{2x-\left(x+2i\right)^2}{\left(x^2+4\right)^2}\right)$

$18-\left(3+12-6\right)$

$\frac{dy}{dt}=\frac{\sqrt{1-y^2}}{t}\:$