Factories:-
(a+b)³-a-b
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Answered by
5
(a+b)³-(a+b)
= (a+b)[(a+b)²-1]
= (a+b)[a²+b²+2ab-1]
= a³+ab²+2a²b-a+ba²+b³+2ab²-b
= a³+3a²b+3ab²-a-b
= a³+b³+3ab(a+b)-(a+b)
= a³+b³+(a+b)(3ab-1)
Answered by
9
(a+b)^3-(a+b)
(a+b)[(a+b)^2-1)
(a+b)[(a+b)^2-(1)^2]
(a+b)[(a+b+1)(a+b-1)]
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