$\frac{d}{dx}\frac{x}{x+y}$

$\left(8x^3+3n^5\right)\left(8x^3-6n^5\right)$

$x^2+10x+22\:=0$

$\left(4a^5-5b^2\right)^3$

$\left(-8\right)\:-\:\left(-6\right)\:+\:\left(-5\right)\:=\:$

$\lim_{x\to\infty}\left(\frac{1+x^2}{e^{2x}}\right)$

$\frac{dy}{dx}=\frac{x-1}{y+4}$