1 2x )-( 6x 2 5x 4 July 8, 2019 16 32 64 128 4 5x )-( 1 2x )= 2 6x 5 4 5x )-( 1 2x )= 2 6x 5 )-( 3 8x 4x 2 5x 1 )+( 2x 2 6x 7