Solve by factoring.
x^2 + 12x - 13 = 0
Solve by factoring.
4(x + 3)^2 = 36
2 answers
Why by factoring when it is easily solved this way:
4(x + 3)^2 = 36
(x+3)^2 = 9
x+3 = ± 3
x = -3 ± 3 = 0 or - 6
but, if you insist ...
4(x+3)^2 = 36
4(x^2 + 6x + 9) = 36
x^2 + 6x + 9 = 9
x^2 + 6x = 0
x(x+6) = 0
x = 0 or x = -6 , just as before
4(x + 3)^2 = 36
(x+3)^2 = 9
x+3 = ± 3
x = -3 ± 3 = 0 or - 6
but, if you insist ...
4(x+3)^2 = 36
4(x^2 + 6x + 9) = 36
x^2 + 6x + 9 = 9
x^2 + 6x = 0
x(x+6) = 0
x = 0 or x = -6 , just as before