2 2x 2 )= 16 3x July 8, 2019 16 32 64 128 2x 2 4x 16 )-( 3x 2 2x 2 2x 5 2 )+ 3x =- 16 7 2x 2 3x 20 x 2 16 2 x 2 5 2 x 13