Solve for x X^2+12x+4=0

Answer 1

solving by completing the square, in this case faster than using the formula

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

Answer 2

I got -6+4sqrt2,-6-4sqrt2
Is this correct?

Answer 3

Correct.
Isn't that what I wrote ?

Answer 4

I got two solutions.

Answer 5

so did I

-6 ± 4√2 means -6 +4√2 OR -6 -4√2