matthewgiglia10856 matthewgiglia10856 04-12-2020 Mathematics contestada Multiply. (x4 + 1)(3x2 + 9x + 2) A. x4 + 3x2 + 9x + 3 B. 3x6 + 9x5 + 2x4 + 3x2 + 9x + 2 C. 3x7 + 9x6 + 2x5 D. 3x8 + 9x4 + 2x4 + 3x2 + 9x + 2