Mathematics · May / June 2022 · Paper 21 · Question 21

0580

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The question as text

Factorise completely. 1 – q – a + aq [2]

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(1 – q)(1 – a) or (a – 1)( q – 1) final answer [2]

B1 for 1 – q – a(1 – q) or 1 – a – q(1 – a) or better or correct answer seen and spoilt

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