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

$\frac{\left(\sec^2x+\csc^2x\right)}{\sec^2x}=\csc^2x$

$2\sqrt{5.4}\sqrt{5}$

$\int x^4\sqrt{x^5-1}dx$

$\frac{\left(a+b\right)^2-\left(a-b\right)^2}{4ab}$

$\left(\:2pt\:\:\:\:-\:\:3t\right)\:\:\left(2pt\:\:\:+\:\:\:3t\right)$

$\frac{d^2y}{dx^2}+\frac{dy}{dx}+5y=35e^{-4x}\:$