Fill in the steps to complete the square:

x^2 +12x − 14 = 0
x^2 +12x − 14 = 14
x^2 +12x + =14

14+14 = 28

x^2 +12x+28 = 14
(x+6)^2 = 14
x+6 = ±√14
x = -6 ±√14