3x 1 )( 2x 7 ) ( 6x 5 )( 1 3x July 8, 2019 16 32 64 128 3x 1 )( 2x 7 )+( 6x 5 )( 1 3x 3x 1 )( 2x 7 )-( 1 3x )( 6x 5 )= 0