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0580/21 May/Jun 2026, Question 16: Expanding Two Brackets

Cambridge IGCSE Mathematics 0580 · Paper 21 (Extended) · Non-calculator · 2 marks

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The question, in short

Expand and simplify the product (3x + a)(x + 4a).

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

Solution · 2 marks

  1. 1(3x + a)(x + 4a) = 3x² + 12ax + ax + 4a²
  2. 2= 3x² + 13ax + 4a²

Answer3x² + 13ax + 4a²

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Also searched as: 0580/21/M/J/26 · 0580_s26_qp_21 · 0580 s26 21 · question 16.
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