Question

25 POINTS
Solve the following quadratic by completing the square

Answer 1

x = -1 ± √13

Explanation:

1. Completing the square of (x² +2x) = 12 gets (x + 1)² = 13, which is also (x² + 2x + 1) = 13

2. Square root both sides to get x + 1 = ± 13

3. Take away 1 from both sides to get x = -1 ± 13