GCE Mathematics 2025 Objective — Question 24
Question 24 of 60 from the General Certificate of Education (GCE) Mathematics 2025 Objective paper, with the correct answer and a full explanation.
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Make b the subject of the formula d = sqrt(ab/c - c^2*b).
- A. b=cd^2/(a-c^3)Correct
- B. b=d^2/(a-c^3)
- C. b=cd^2/(c-c^3)
Explanation
Squaring both sides and isolating b (following the algebraic steps in the source solution) gives b = cd^2/(a-c^3).
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