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Question
factorise: (2x - y)3 - (2x - Y)
Sum
Solution
(2x - y)3 - (2x - Y)
= (2x - y)[(2x - y)2 - 1]
= (2x - y)(2x - y - 1) (2x - y + 1)
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Factorisation of Trinomials
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