0580/11 Oct/Nov 2024, Question 21: Rearranging Formulas
Cambridge IGCSE Mathematics 0580 · Paper 11 (Core) · Calculator · 3 marks
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The question, in short
Factorise the expression 28x − 35, then rearrange T = r/4 − p to make r the subject.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Part (a) · 1 mark
Factorise 28x − 35 fully.
- 128x − 35 = 7(4x − 5)
Answer7(4x − 5)
Part (b) · 2 marks
Rearrange T = r/4 − p to make r the subject.
- 1T + p = r/4
- 2r = 4T + 4p
Answer4T + 4p or 4(T + p)
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Also searched as: 0580/11/O/N/24 · 0580_w24_qp_11 · 0580 w24 11 · question 21.
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