4 4 12x July 8, 2019 16 32 64 128 X 4 = 12x = 3 4 12x 4 1 4 12x 4 4 3x =- 12x 4 8x 4 12x 4 4 4 x 5 )= 12x 12x8 4 4 12x 4 4 3x 1 12x 4 4 x 2 12x 4 4 2x 1 8 x 4 )= 12x 4