$-7n+5m=-13n+6n+5n$

$m\left(x+2\right)+\left(x+2\right)$

$\frac{dz}{dx}=\:z-z^2$

$\int\frac{3x}{\sqrt[3]{x^2}}dx$

$^{\left(n^2-\frac{1}{2}n\right)^2}$

$3-\left|-2+11-4\left(4-15-7\right)\right|-2+\left|-3-\left(5-26-1\right)+2\right|$

$\left(nx+cn-ab\right)+\left(ab+8nx-cn\right)+\left(-ab+nx-5\right)$