### Home > CCAA8 > Chapter 9 Unit 10 > Lesson CCA: 9.4.3 > Problem 9-117

9-117.

Solve the quadratic equation below *twice*, once using the Quadratic Formula and once by completing the square. Which was easier?

Quadratic Formula:

Complete the Square: Subtract 21 on both sides. Then add a constant to both sides to get: