PLEASE prove that answer DEAR FRIEND
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Step-by-step explanation:
(a+b+c)³=(a³+3a²b+3ab²+b³)+3(a²+2a b+b²)c+3(a+b)c2+c³. (a+b+c)³=a³+b³+c³+3a²b+ 3a²c+3ab²+3b²c+3ac²+3bc²+6abc.
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