5x 2 9 4x 5 July 8, 2019 16 32 64 128 5x 2 9 4x 5 quadratic formula 4x 2 5x 4 9 5 11x 4x 9 5x 2 56 3x 2 5x 9 4x 2 3x 5 5 2 (- 5x 8 )= 9 4x 7x 2 4x 9 )-( 5x 2 10x 5
