$\left(a^z\right)\left(a^3\right)\left(a^3\right)$

$\frac{4a^2b^2c^2}{-2bc}$

$2y-3y-6y+5y$

$\int2x^{13}e^{-x^7}dx$

$\int\frac{\sqrt{324+x^2}}{x}dx$

$\left(\frac{m^2}{3}+\frac{2n}{5}\right)\cdot\left(\frac{m^2}{3}-\frac{2n}{5}\right)$

$\left(8z-2\right)\left(8z+6\right)$