2 4 9 x 7 1 2 July 8, 2019 16 32 64 128 1 2 7 9 x 4 2 5x 2 3 x 4 9 1 2 3 7 x 0 7 6 x 2 1 2 4 9 4 x 2 )- 7 2x 1 )+ 9 3x 4 )= 30 2 1 7 x 2 4 9 x 2 6 11 1 divided by 2 7 9 x 4 2 5x 4 7 1 2 x mũ 2 4 9 2 9 + (-7 4) 2 9×+7 4=×+1 7