$2a+\frac{\sqrt{a}}{b}$

$\frac{8x^3+27^3}{2x+3y}$

$\int\frac{2x^2-3x-2}{\left(x+2\right)\left(x^2+2x+2\right)}dx$

$\frac{dy}{dx}=\frac{6y}{100}$

$.8\:-\:\left(-3\right)\:$

$\frac{3x^2+2x}{x^3+x^2+1}$

$-13xy^2\left(-6xy\right)$