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16 September, 18:46

Factorise fully

21a - 7a^2

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Answers (2)
  1. 16 September, 19:05
    0
    7 (3a-a^2)

    Step-by-step explanation:

    7 divided into 21 is 3

    7 (3a-a^2)
  2. 16 September, 19:06
    0
    3a (7-a)

    Have a great day!
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