Question Detail
Question
Simplify: (3x² - 1)(x² + x + 1)
Correct Answer
Option C is the correct answer.
Detailed Explanation
Expanding: (3x²)(x²) = 3x⁴, (3x²)(x) = 3x³, (3x²)(1) = 3x², (-1)(x²) = -x², (-1)(x) = -x, (-1)(1) = -1. Combining: 3x⁴ + 3x³ + (3x² - x²) = 2x², then -x - 1.
Hint
The notes indicate answer C.