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If x2 + 4 = 0, then x ?

If x2 + 4 = 0, then x ?
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A 4
  • B -4
  • C 2
  • D -2
  • E None of the above
Correct Answer: Option E
Explanation:
x2 + 4 = 0
x2 = -4
You can't apply a square root to a negative number. So the answer is None of the above.

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