Question: What is the value of x in the equation x^2 - 4 = 0?

Options:

1. -2
2. 2
3. 0
4. Both -2 and 2

Correct Answer: Both -2 and 2

Solution:

Step 1: Factor the equation: (x - 2)(x + 2) = 0. Step 2: Set each factor to zero: x - 2 = 0 or x + 2 = 0. Solutions are x = 2 and x = -2.