0 5 x 9 July 8, 2019 16 32 64 128 0 5 x 90 0 5 x 9 8 0 5 x 9 81 0 5 x 900 0 5 x 96 4 0 5 x 9 )=- 2 1 0 5 x 2 9 4 0 5 х 9 )=- 2 1 2x 5 )( x 9 )= 0 5 9 x 0 75 4 x 1 4 0 5 x 9 0 9x 5 4 x 0 5 x 1 9 0 5 x 4 9 0 3 x 5 9