6x 2 7x 2 7 July 8, 2019 16 32 64 128 6x 2 xy 7x 2y 2 7y 5 6x 2 xy 2y 2 7x 7y 3 6x 2 7x 7 0 5x 2 6x 2 )-( 7x 2 7x 5 (- 7x 2 3x 5 )( 7x 2 6x 7 4x 2 7x 3 6x 2 5x 7 4x 2 7x 1 )( 6x 2 x 7 2x 7