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Question
Factorise the following:
(3a - 2b)2 +3(3a - 2b) - 10
Sum
Solution
(3a - 2b)2 + 3(3a - 2b) - 10
= (3a - 2b)2 + 5(3a - 2b) - 2(3a - 2b) - 10
= (3a - 2b)(3a - 2b + 5) - 2(3a - 2b +5)
= (3a - 2b + 5)((3a - 2b - 2).
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