4MA1/2HR Jan 2022, Question 15: Rearranging Formulas
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2HR (Higher) · Calculator · 4 marks
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The question, in short
Rearrange n² = (4d + t³)/t³ to make t the subject, showing the algebraic steps.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 4 marks
- 1n²t³ = 4d + t³
- 2n²t³ − t³ = 4d
- 3t³(n² − 1) = 4d
- 4t³ = 4d/(n² − 1)
- 5t = ∛(4d/(n² − 1))
Answert = ∛(4d/(n² − 1))
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