2x 5 7x 20 July 8, 2019 16 32 64 128 5 2x 3 )- 7x 20 2x 5 6x 2 7x 20 3 3x 4 )- 2x 5 7x 20 2x y =- 5 7x y =- 20 7x 20 2x 5 159 5 3x 2 )+ 2x 7x 20 7x 20 5 2x 3 )-( 3x 7 2x 7 2x 5 2 x 2 5