$x^2-8x-16$

$\frac{\cos\left(x\right)+\sin\left(x\right)}{\frac{\cos\left(x\right)}{\sin\left(x\right)}+1}$

$\lim_{x\to0}\left(\frac{e^{5x}}{x^2}\right)$

$\left(x^4+\frac{\sqrt[3]{6}}{x^2}\right)^{2n+1}$

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

$\int x^{12}dx$