For solving equations by completing the square, how do you solve X2 - 4X + 12 = 0?

X² - 4x + 12 = 0

x = - (-4) / - √ ((-4) ² - 4 (1) (12))

2 (1)

x = 4 + / - √ (16 - 48)

2

x = 4 + / - √ (-32)

2

x = 4 + / - 4i√ (2)

2

x = 2 + 2i√ (2)

x = 2 + 2i√ (2) x = 2 - 2i√ (2)

The solution the problem is {2 + 2i√ (2), 2 - 2i√ (2) }.