X 3 x 2 8x 12 0 July 8, 2019 16 32 64 128 X 4 2x 3 x 2 8x 12 0 X 3 5x 2 8x 12 0 X 5 8x 4 12x 3 x 2 8x 12 0 2^x + 8^x = 130