Who is Correct and why:-
Formula of (a+b) ³
(i) => a³-3ab (a-b) + b³
(ii) => a³+3ab (a+b) +b³
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The cube of sum of two terms is written in mathematical form as the cube of binomial . It is read as plus whole cube and it is used as a formula to expand cube of sum of any two terms in terms of them in mathematics. ( a + b ) 3 = a 3 + b 3 + 3 a 2 b + 3 a b 2.
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Both Are Wrong , The correct is..
=(a+b)³=a³+3a²b+3ab²+b³
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