Question: What is the solution set for the equation x^2 - 9 = 0?

Options:

1. x = 3, -3
2. x = 9
3. x = 0
4. x = 1, -1

Correct Answer: x = 3, -3

Solution:

Factoring gives (x - 3)(x + 3) = 0. Thus, the solutions are x = 3 and x = -3.