Question: Which of the following is the correct factorization of x² + 6x + 9?

Options:

1. (x + 3)²
2. (x + 2)(x + 4)
3. (x + 1)(x + 8)
4. (x + 3)(x + 3)

Correct Answer: (x + 3)²

Solution:

x² + 6x + 9 is a perfect square trinomial, which factors to (x + 3)².