WAEC Further Mathematics 2022 Objective — Question 39
Question 39 of 40 from the West African Examinations Council (WAEC) Further Mathematics 2022 Objective paper, with the correct answer and a full explanation.
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If f(x−1)=x³+3x²+4x−5, find f(2).
- A. 61Correct
- B. 25
- C. 20
- D. 13
Explanation
For f(2), set x−1=2, so x=3. f(2)=3³+3(3²)+4(3)−5 = 27+27+12−5 = 61.
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