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WAEC Mathematics 2023 Objective — Question 14

Question 14 of 50 from the West African Examinations Council (WAEC) Mathematics 2023 Objective paper, with the correct answer and a full explanation.

Make x the subject of the relation: y=(αx³-b)/3z.

A. ∛[(3yz-b)/a]
B. ∛[(3yz+b)/a]Correct
C. ∛[(3yz-b)/a]
D. ∛[(3y³+b)/az]

Explanation

y=(ax³-b)/3z → 3yz=ax³-b → ax³=3yz+b → x³=(3yz+b)/a → x=∛[(3yz+b)/a].

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