$\sqrt{81x^3y^4}$

$2\left(6h+4\right)+7\left(3h+4\right)$

$\int\frac{-9x^3}{\sqrt{x^2+9}}dx$

$\lim_{x\to0}\left(\frac{sin\left(x\right)}{x}\right)^{\left(\frac{1}{x^2}\right)}$

$( 1 - 2 n ) ^ { 3 }$

$\left(-\frac{1}{2}\right)^0$

$\lim_{x\to\:-3}\frac{-5}{\left(x+3\right)^2}\:$