Factor the x^2+6x+9 and then take the square root of the entire equation. Then simply get x alone and you'll have your answers. x=2 and -8
Explanation:
1: x^2+6x+9 can be factored as (x+3)*(x+3) or (x+3)^2
2: (x+3)^2= 25 take square root of entire equation
3: x+3 = +-5
4: x= 5-3 and x=-5-3
Thus x = 2 and -8