Question

Solve x2 + 12x + 6 = 0 using the completing-the-square method.

Ox= 6 + V30
Ox= 6+ V30
Ox= 60 V6
Ox= 6 + V6

Answer 1

`{x}^(2) + 12x + 6 = 0 \\ D = {12}^(2) - 4 * 6 = 144 - 24 = 120 = \\ = (2 √(30) )^(2) \\ x_1= ( - 12 + 2 √(30) )/(2) = - 6 + √(30) \\ x_2= ( - 12 - 2 √(30) )/(2) = - 6 - √(30)`

But i don't see correct answer here

Ox= 6 + V30

Ox= 6+ V30

Ox= 60 V6

Ox= 6 + V6

or maybe i don't understend something