what is the expanded form of (a+b)whole cube ?

(a + b)3 = a3 + b3 + 3ab(a + b)

(a + b)3 = a3 + b3 + 3a2b + 3ab2

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(a+b)3 = a3+b3+3ab(a+b)

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(a+b)³=a³+3a²b+3ab²+b³

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