(a+b)³-a-b factorise
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Answer:
(a+b)^3−a−b
=(a+b)^3−(a+b)
=(a+b)((a+b)^2−1)
=(a+b)(a+b+1)(a+b−1)
Answered by
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Answer:
(a+b)³ = a³ + b³ + 3 × a × b
= a³ + b³ + 3ab - a - b
= a(a² + 3b - 1) + b(b² + 3a - 1)
Step-by-step explanation:
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