$3x+12=x+16$

$\left(4x^2\sqrt{6}-2\sqrt{12}y^4\right)\left(4x^2\sqrt{6}-2\sqrt{12}y^4\right)$

$\int_0^y\sin\left(x+y\right)dx$

$\sin\left(\frac{x}{c}\right)=0$

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

$\int x\sqrt{9x^2-1}dx$

$-145\:+\:830$