$-\left(3+2\right)\:-\:\left(2+2\right)^2-\:\left(0-5\right)^2$

$\lim_{x\to2}\left(\frac{x^2-3x+8}{x-1}\right)$

$\frac{\sin\left(x\right)}{\cos\left(x\right)^2}-\frac{1}{\cos\left(x\right)}$

$2x^2+16x=0$

$25w^2-60w+36$

$\frac{dy}{dx}=\frac{3y^2}{x^2}$

$y^2=4x^3+22x^2$