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WAEC Mathematics 2026 Question 28

Question 28

Indices

If 2−n = x, find 2n

  1. A.−1/x
  2. B.1/x
  3. C.x
  4. D.−x
Show the answer and explanation

Answer: B (1/x)

Explanation

2n = 1/2−n = 1/x.