7x 2 x )-( 9x 2 4x July 8, 2019 16 32 64 128 Perform the operation 7x 2 x )-( 9x 2 4x Left 7x 2 + x right )- left 9x 2 + 4x right 2x 7 9 - 2(- 4x + 7) = 7
