9 x 5 ≥ 81 July 8, 2019 16 32 64 128 9 x 5 )= 81 5 *( 810 9 x * 3 )= 315 9 x 5 )+ 3x 81 5 9 x 81 1 5 9 x 81 32 5 over 9 x 81 5 log 9 x 81 log 625 5 x 9 )+ 16 81 810 x 5 9 0 5 x 9 81 5 9 x 32 40 81 81 4x 1 9 x 5 9 mũ 5 x 8 81 81 9 5 x 7 4
