9986561 9986561 08-04-2021 Mathematics contestada 6x? - 5x + 3 3x2 + 7 x-8 + A. 9x2 + 12x-5 B. 9x2 + 2x + 11 c. 9x2 + 2x - 5 D. 9x2 - 2x + 5