9x 4 5x 2 July 8, 2019 16 32 64 128 9x 4 5x 20 9x 4 5x 24 9x 4 5x 28 9x 3 4 5x 2 9x 2 4 5x 3 )- 8 9x 2 5x 4 180 5x 2 9x 4 0 quadratic formula 9x 4 45x 2 14 9x 4 45x 3 9x 2 4 5x 2 )= 2 9x 3 answer 9x 5 4 x 2 )+ 5x 4 5x 2 )= 2 9x 3 solve 4 5x 2 )= 2 9x 3 solution