X 2 4x 80 July 8, 2019 16 32 64 128 X 2 4x 80 0 X 2 24x 80 X 2 24x 80 0 Solve x 2 24x =- 80 by completing the square Solve x 2 24x =- 80 Y x 2 24x 80 Factor x 2 24x 80 X 4 24x 2 80 X 3 3x 2 24x 80 6 x 5 )- 2 4x 2 80