$9m^2-27m-m^3+27$

$\lim_{x\to\infty}\left(\frac{2x}{x^2-4}\right)$

$\frac{3csc\left(x\right)}{csc\left(x\right)-cot\left(x\right)}$

$\left(9\right)\left(7\right)\left(10\right)$

$\lim_{x\to0}\frac{x^2}{x+1}$

$\int6\left(2x-4\right)^{-6}dx$

$\left(7t^{-3}\right)^3\left(s^5t^4\right)^2$