Simplify: (3x²)(4x³) A 7x⁵ B 12x⁵ C 12x⁶ D 7x⁶ ✓ Correct Answer: Option B Multiply coefficients: 3×4=12. Add exponents: x²⁺³ = x⁵. Result: 12x⁵. Practice PSAT Exam Prep Quizzes → Browse All Questions Study Flashcards