WAEC Mathematics 2015 Objective — Question 7
Question 7 of 50 from the West African Examinations Council (WAEC) Mathematics 2015 Objective paper, with the correct answer and a full explanation.
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If 2ⁿ=y, find 2^(2+n/3)
- A. 4y^(1/3)Correct
- B. 4y^(-3)
- C. 2y^(1/3)
- D. 2y^(-3)
Explanation
2^(2+n/3) = 2²×2^(n/3) = 4×(2ⁿ)^(1/3) = 4y^(1/3).
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