Mathematics · May / June 2020 · Paper 21 · Question 9
0580
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The question as text
Factorise completely.
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9(a)[2]
7a(3a + 4b) final answer [2]
B1 for partial factorisation 7(3a2 + 4ab) or a(21a + 28b)
9(b)[3]
5(2x + 3y)(2x – 3y) final answer [3]
B2 for (2x + 3y)(2x – 3y) or (10x + 15y)(2x – 3y) or (2x + 3y)(10x – 15y)
or B1 for 5(4x2 – 9y2)
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