$\left(-8\right).\left(-9\right),1,2,5$

$\frac{d}{dx}\left(\frac{\left(x+2\right)^4\left(x-1\right)^3}{\left(2x+1\right)^2}\right)$

$\lim_{t\to-1}\left(d-2at\right)$

$\frac{b}{-8}=-2$

$\int\left(\left(x+1\right)\sqrt{3-x}\right)dx$

$r+rs^3+rs^3$

$\frac{\sin b}{\csc b}+\frac{\cos b}{\sec b}=1$