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0580/11 May/Jun 2025, Question 3: Factors and Multiples

Cambridge IGCSE Mathematics 0580 · Paper 11 (Core) · Non-calculator · 2 marks

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The question, in short

Find two numbers whose sum is −2 and whose product is −15.

Summarised in our own words. Use the official paper for the exact wording and any diagrams.

Solution · 2 marks

  1. 1List pairs that multiply to −15: 1 and −15, −1 and 15, 3 and −5, −3 and 5.
  2. 2Only 3 and −5 add to −2.
  3. 3The numbers are −5 and 3

Answer−5 and 3

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Also searched as: 0580/11/M/J/25 · 0580_s25_qp_11 · 0580 s25 11 · question 3.
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