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UI Post-UTME Mathematics 2025 (Model questions) Question 23

Question 23

Indices

Solve 2x+1 + 2x = 48

  1. A.3
  2. B.6
  3. C.5
  4. D.4
Show the answer and explanation

Answer: D (4)

Explanation

2ˣ(2 + 1) = 48, so 2ˣ = 16 = 2⁴ and x = 4.