colbycason63 colbycason63 15-02-2018 Mathematics contestada Subtract the polynomials. (3x2 + 5x + 7) - (-4x2 + 3x - 6) A) -x2 + 8x + 1 B) 7x2 + 8x + 1 C) 7x2 + 2x + 13 D) x2 + 2x + 13