$\frac{dy}{dx}=\frac{xy^2+x}{\csc\left(x\right)}$

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

$\frac{x^2+8x^2+6x+1}{x+5}$

$4x>24$

$\lim_{x\to-3}\left(\frac{x^2-5x+6x}{x^2-x-12}\right)$

$\frac{x^3-8x^2+7x}{x^2-x}$

$\left(4x^2+6x+3\right)-\left(5x^4+4x-3\right)$