1 4x 2 2x 4 0 July 8, 2019 16 32 64 128 X 2 4x 4 2x 2 x 1 0 1 2 4x 3 2x 0 7 )=- 2 4 4x 1 2 4 2x 3 2 x 4 0 1 - 2 = 4