3x 2 5x 9 x 2 3 July 8, 2019 16 32 64 128 3x 2 5x 9 x 2 36 3x 2 5x 9 x 2 7x 3 6x 4 5x 3 3x 2 5x 9 x 2 1 3. 2x ^ 2 - 9 5 - 3x
