Question

(x + 3)^2- 144

I have to factor it

Answer 1

X=-15

X=9

Explanation:

I think this is how you do it

`(x + 3)(x + 3) - 144 \\ {x}^(2) + 3x + 3x + 9 - 144 \\ {x}^(2) + 6x - 135 \\`

From there it's a regular quadratic

`{x}^(2) - 9x + 15x - 135 \\ x(x - 9) + 15(x - 9) \\( x + 15)(x - 9) \\ x = - 15 \\ x = 9`