$\left(\sqrt[2]{x}\right)\cdot\left(3^{\frac{1}{2}}\cdot x^{\frac{1}{3}}\right)$

$\:\left(2x-3y\right)\left(2x+3y\right)$

$\frac{d}{dx}y=\frac{e^x-e^{-x}}{e^x+e^x}$

$3ydx=2xdy'$

$\frac{2}{\sec\left(x\right)}\:$

$\left(2x^{3}-4x^{7}\right)^{2}$

$\int\frac{1}{4+8x-x^2}dx$