9 x 6 81 July 8, 2019 16 32 64 128 9 6 x 81 2x 9 6 х 81 1 9 x 6 81 9x x 6 )= 81 1 9 6 x 81 4 9x x 6 )= 81 complete the square 9 10 8 4 x 6 81 9 x 8 = 9 × 81