9x 4 7x 2 July 8, 2019 16 32 64 128 9x 4 7x 2 16 9x 4 7x 20 9x 2 7x 4 0 8 7x 4 9x 24 7 9x 4 7x 3 2x 2 9x 2 4 7x quadratic formula (- 6x 2 4 )+( 9x 2 7x 9x 2 7x 4 0 quadratic formula 9x 2 7x 4 0 factor 7x 4 9x 24 2x 7x 4 9x 24 7x 4 9x 4 2x 7x 4 =- 2x 1 9x 5 4 7x 3 5 9x 2