$\lim_{x\to\infty}\left(\frac{-xe^{b-ax}}{a}\right)$

$\left(-1-p\right)\left(3+p\right)$

$\frac{d}{dx}\left(\frac{y}{x+6y}\right)=x^3-9$

$\lim_{x\to3}\left(\frac{\sqrt{x+8}-\sqrt{11}}{x-3}\right)$

$\left(\frac{a+b+1}{4}\right)^{-2}$

$\frac{csc\left(-x\right)}{sec\left(-x\right)}=-cot\:x$

$14-3m+2m-10-5m$