$12x^2+28x-24$

$120+x=-62$

$x\left(\frac{dv}{dx}\right)=\frac{\left(1-4v^2\right)}{3v}$

$-4\left(x+2\right)^2+9$

$3\sin\left(2x\right)^2$

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

$\frac{d}{dx}\left(\left(3x+2\right)^4\left(8x-7\right)^2\right)$