kgomez3829 kgomez3829 12-02-2018 Mathematics contestada Simplify. (3x2 + 3) - (6x + 4) + (3x2 - 5x) A. -11x - 1 B. 6x2 + x + 7 C. 6x2 - 11x - 1 D. 6x2 - 11x + 7