4 0 5 x 9 )=- 2 1 July 8, 2019 16 32 64 128 X 5 4 10 x 5 2 9 0 4 5 0 9 x 3 1 2 x 20 4 5 x 100 2 9 chia 0 01 4/9 = 0 2/x
