Mathematics
(a + b)3 - a - b
Factorisation
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Answer
Given,
(a + b)3 - a - b
= (a + b)3 - (a + b)
= (a + b)[(a + b)2 - 1]
= (a + b)[(a + b)2 - 12]
= (a + b)(a + b + 1)(a + b - 1).
Hence, (a + b)3 - a - b = (a + b)(a + b + 1)(a + b - 1).
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