HesitantAlien765 HesitantAlien765 20-04-2017 Mathematics contestada For questions 2 and 3, simplify the polynomial. 2. 3x^2 + 6 - 2x + 5x - 4x^2 = 9 a. -x^2 + 3x + 15 b. 7x^2 + 3x + 3 c. x^2 - 3x + 15 d. -x^2 + 7x + 15 3. 3x^2 + 5x - 7x + 3 - 5x^2 + 2 a. -2x^2 + 2x + 5 b. -2x^2 - 2x + 5 c. 2x^2 - 2x + 5 d. 2x^2 + 2x + 5