5x 6 2x 10 5 July 8, 2019 16 32 64 128 5x 6 10 9 2x 5 5x 3y 6 2x 5y =- 10 5x 3y 10 2x 6 5y 4 6 2x 5 5x 10 3 2x 5 5x 6 7 10 (- 5x 2 5x 10 )/( 2x 6