2x 3 x 2 16x 8 July 8, 2019 16 32 64 128 X 4 2x 3 6x 2 16x 8 X 5 2x 4 x 3 8x 2 16x 8 0 X 4 2x 3 6x 2 16x 8 0 2x 4 − 16x 3 x 2 − 9x 8 2^x + 8^x = 130