9 x a = 81 July 8, 2019 16 32 64 128 9 x = 81 9 x 813 9 x 81 in logarithmic form 9 x 81 18 9 x 810 9 x 819 9 x 812 9 x 811 9 х 81 9 9x 81 9 х 81 18 9 x 1 81 X 9 810 3 9 x 2 81 9 x 4 81
