Solve x2+6x+12=$$0x^2+6x+12=0 by $$completing the square.

Completing the Square

12. Quadratic Equations and Functions / Completing the Square / 문제 1

문제 1

Solve $x^{2} + 6 x + 12 = 0$ by completing the square.

$x = - 3 \pm i \sqrt{3}$

$x = - 3 i \pm \sqrt{3}$

$x = - 3 \pm i \sqrt{5}$

$x = 3 \pm i \sqrt{3}$