4x 2 5x 2 1 July 8, 2019 16 32 64 128 4x 2 5x 2 1 0 4x 2 5x 12 2 2 (- 4x 2 )+ 5x 2 =- 19 2 (- 4x 2 ) - 5x 10 4x 2 3 5x 1 2 4x 2 5x 12 0 4x 2 5x 12 0 calculator 4x 2 5x 12 0 answer 4x 2 )- 5x 12 0 factoring 4x 2 5x 12 0pi 4x 2 5x 12 0 f x 4x 2 5x 12 0 quadratic equation 4x 2 5x 17 4x 2 5x 12 0x 4x 2 5x 12 c