Question: What is the value of x in the polynomial equation x^3 - 4x = 0?

Options:

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

Correct Answer: x = 0, 2, -2

Solution:

Factor out x: x(x^2 - 4) = 0. Thus, x = 0 or x^2 - 4 = 0, giving x = 2 or x = -2.