2x 9 5x 4 July 8, 2019 16 32 64 128 2x 9 5x 4x 6x 2 2x 9 5x 4 7x 6x2 2x 9 4x2 5x 5x 13 2x 9 4 3x 2x 9 )( 4x 2 5x 12 5x 6 )( 2x 9 )+ 4 4x 2x 9 2 5x 6 3 2x 9 5x 4 2x 3 5x 9 42 5x 2x 9 40 2x 3y 9 5x 6y =- 45 9 2x 3 4 (- 5x 2 5x 2x 9 47 5x 14 2x 9 4x 2 4x 2 2x 9 5x 13