X 4 2x 3 6x 9 July 8, 2019 16 32 64 128 X 4 2x 3 6x 9 0 X 4 2x 3 9x 2 6x 9 0 X 4 6x 3 2x 2 96x 144 0 X 6 2x 4 6x 9 )/( x 3 3 X 4 12x 3 42x 2 36x 9 6xy - 4y + 6 - 9x 4^x + 6^x = 2*9^x