$\left(x^2+y^2\right)\left(x\frac{d}{dx}\left(y\right)+y\right)-xy\left(x\frac{d}{dx}\left(y\right)+y\right)=0$

$x+y=\frac{dy}{dx}$

$f\left(x\right)=\frac{x^5}{x^6+64}$

$2\left(x\:-\:3\right)\:+\:x\:=\:12$

$6+in\left(x+5\right)=7$

$\int\left(3x^3\cos\left(3x^4\right)\right)dx$

$y=2\sqrt{x}-\sqrt{x^2}$