X 4 2x 3 5x 2 8x 4 July 8, 2019 16 32 64 128 X 4 2x 3 5x 2 8x 4 0 2x 5 x 4 10x 3 5x 2 8x 4 (4x + 5) ^ 2 - 2x(8x + 1)