Answer
$$x=0$$
$$x=1$$
$$x=-2$$
Work Step by Step
We have $$12x=6x^3+6x^2$$
Sending all the terms to one side $$6x^3+6x^2-12x=0$$
Factorizing $$6x(x^2+x-2)=0$$ $$6x(x+2)(x-1)=0$$
Solving each parenthesis 1)$$6x=0$$ $$x=0$$
2)$$x+2=0$$ $$x=-2$$
3)$$x-1=0$$ $$x=1$$
