(a+b)³–a–b in factorise
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Answer:
(a+b)(a^2+b^2-ab-1)
Step-by-step explanation:
(a+b)³–a–b
(a+b)^3-(a+b)
=(a+b) { (a+b)^2-1)
=(a+b)(a^2+b^2+2ab-1)
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