2 5x 8 7 5 x July 8, 2019 16 32 64 128 2 5x 11 7x 5 x 8 3x 7 5x 2 )( 5x 8 )-( 3x 5 )( x 7 5 x 1 )= 7 2 5x 8 2 x 2 5 2-5x 8