$\left(11x^2-22x+22\right)e^x$

$\:2^2-234+4^2$

$6\:+\:9\:+\:\left(-4\right)\:+\:\left(-1\right)+5\:+\:3\:+\:\left(-7\right)\:+\:\left(-6\right)$

$\frac{5}{12}n^2-\frac{9}{4}n^2$

$\frac{dy}{dx}=\frac{2x}{3y}$

$\int_1^2\left(x-9\right)e^{3x}dx$

$\log_{x+3}\left(2x+3\right)+\log_{x+3}\left(x+5\right)=2$