Question

Solve by Factoring:
3x^2=-9x

Answer 1

x=-3, 0.

Answer 2

...

Answer 3

Now how do you get that?

Answer 4

Add 9x to both sides to get 3x^2+9x=0. From here, factor out 3x from the left side of the equation to get 3x(x+3)=0. From here you can tell that if x was equal to -3 or if x were equal to 0 this equation would be true.