$\frac{dy}{dx}=9-8x$

$\left(\frac{\sin\left(x\right)}{\tan\left(x\right)}\right)^2+\left(\frac{1}{\csc\left(1\right)}\right)=1$

$-3\sin^2\left(c\right)+4\sin\left(c\right)-7=0$

$\left(5b-x^3\right)^2$

$\frac{2x^3+3x-10}{x+3}$

$\lim_{x\to-5}\:\:\frac{\left(x-3\right)\left(x+4\right)}{x+5}$

$\frac{dy}{dx}-x=x^2-y$