x square plus 12X plus 4 equals 0 what is the value of x

x^2 + 12x + 4 = 0

does not factor, so I will complete the square, easiest way for this one.

x^2 + 12x + 36 = -4+36
(x+6)^2 = 32
x+6 = ±√32 = ±4√2
x = -6 ± 4√2