Question

Solve 2x^2+8x=-16 by completing the square

Answer 1

x = -2 + 2i or x = -2 - 2i

Explanation:

2x² + 8x = -16

x² + 4x = -8

x² + 4x + 4 = -8 + 4

(x + 2)² = -4

x + 2 = ±√(-4)

x + 2 = ±2i

x = -2 + 2i or x = -2 - 2i