12 2x 2 5 July 8, 2019 16 32 64 128 12 2x 2 5x 12 2x 2 5.8 12 2x 5 2 2x 3 2x 2 5x 12 0 quadratic formula 2x 2 5x 12 0 2x 2 5x 12 0 solve by factoring 2x 2 5x 12 factor 2x 2 5x 12 0 graph 2x 2 5x 12 0 discriminant 2x 2 5x 12 x 4 12 5x 2x 2 15 10x 2x 12 0 x 5 2 (- 11 12 2x 5 2 1 4 2x 12 y 2 5 2x 2 5x 12 0 completing the square