Question

Factor 3x2 - 6x - 9 completely​

Answer 1

3(x^2-2x-3)
3(x-3)(x+1)

Answer 2

3(x-3) (x+1)

Explanation:

3x^2 - 6x - 9

Factor out a 3

3(x^2 -2x-3)

Now we factor inside the parentheses

What 2 numbers multiply to -3 and add to -2

-3*1 = -3

-3+1 = -2

3(x-3) (x+1)