BAHAKABALAN5GO BAHAKABALAN5GO Mathematics Answered 4. Simplify: (3x2 + 3x + 1) + (x2 + x + 5) A. 3x2 – 2x + 4 B. 4x2 + 4x + 6 C. 4x4 + 4x2 + 6 D. 4x4 + 3x2 + 5