a plus b the whole cube
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(a+b) ³:- a³+b³+ 3ab(a+b)
- a³+b³ +3a²b +3ab²
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a³+b³+3ab(a+b)= (a+b)³. or (a+b)³= a³+3a²b+3ab+ b³. if you have know it is the correct plz you can give me thanks.
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