2 2 2x 2 8 July 8, 2019 16 32 64 128 2 x 2 2x 8 2 x 2 x 2 2 2x 8 1 2 2x 2 )- 8x 2 x 2 )( x 2 2x 80 2 2x 8 2 6x 2 2 x 2 2x 2 x 2 6x 8 8 2 x 6 )=- 2 2x 2 4 x 2 2 =( 4 2x 2 8 2