6x 1 5x 6 July 8, 2019 16 32 64 128 6x 8 =- 5x 1 6 36 6x 1 6 5x 5x 5 6 6x 1 6 6x 7y 2 5x 6y 1 1 6x 3 1 5x 6 42 6x 6 (- 1 5x