$x2-10x+24=0$

$16x^2-16x+4$

$\frac{dy}{dx}\tan\left(x\right)=2y$

$\frac{d}{dx}\left(x^3-4\right)^4\left(x^2+5\right)^3$

$\:\left(2y^2-4x+5\right)dx\:+\:\left(4xy\:+\:4-\:2y\right)\:dy\:=\:0$

$\frac{1+\sin a}{\cos a}-\frac{\cos a}{1+\sin a}=2\sec a$

$\frac{x+4}{2x-1}\le\:3$