$9j-3j+-6j$

$\int\frac{x^2+6}{\left(x-1\right)^2}dx$

$3x^2-16x+16=0$

$\frac{dy}{dx}=3x^2+5x$

$f\left(x\right)=10+12x^2-3x^2-2x^3$

$\frac{d}{dx}\left(ln\left(\frac{\left(3y+1\right)^4}{\sqrt{y^2+1}}\right)\right)$

$\frac{\left(3x-1\right)}{2}+\frac{\left(x-x^2\right)}{3}+1<0$