Solve for x: x² + 0x - 4 = 0
- A. x = 2 or x = -1
- B. x = 3 or x = -3
- C. x = 2 or x = -2 ✓
- D. x = -2 or x = 2
Correct answer
C. x = 2 or x = -2
Explanation
Factor the quadratic: (x - 2)(x - -2) = 0, so x = 2 or x = -2.
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