0580/42 May/Jun 2025, Question 14: Factorising by Grouping
Cambridge IGCSE Mathematics 0580 · Paper 42 (Extended) · Calculator · 2 marks
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The question, in short
Factorise the four-term expression 5x − 10 − ax + 2a, grouping terms to extract a common bracket.
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Solution · 2 marks
- 15x − 10 − ax + 2a = 5(x − 2) − a(x − 2)
- 2= (x − 2)(5 − a)
Answer(x − 2)(5 − a)
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