$-\sqrt{2}csc^2a-2csca=0$

$\int\frac{2x-x^2+5}{\left(x+2\right)^3}dx$

$48+\left(8+2-7+1-10\right)$

$\lim_{x\to0}\sqrt{-3x^3-7x+8}$

$\frac{dy}{dx}=4y-36$

$\lim_{y\to0}\left(\frac{e^y+\sin\left(y\right)-1}{\ln\left(y+1\right)}\right)$

$\frac{-1-9\cdot\left(-1\right)}{-1}$