$\lim_{x\to1}\left(\frac{sinx}{x}\right)$

$\frac{dy}{dx}=x^2\cdot e^{5\cdot x}+\frac{2\cdot y}{x}$

$\left(x^2-64\right)\left(x^2-2\right)$

$\left(\left[\frac{1}{9}\right]xy-z^5\right)\left(\left[\frac{1}{9}\right]xy+z^5\right)$

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

$\frac{\cos\left(x\right)}{1+\cos\left(x\right)}-\frac{\cos\:\left(x\right)}{1-\cos\:\left(x\right)}=2\sec\left(x\right)^2$

$-8a^{x-1}+8a^{x-1}$