2x 2 5x =- 10x 7 July 8, 2019 16 32 64 128 2x 2 5x 7 10x 2 7x 1 2x 2 5x 3 (- 10x 2 2x 7 4x 5x 2 )-( 10x 3 )( 2x 7 )= 133 5x 7 2x 2 10x 41 2 x 2 5 2x 7 2x 10