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a+b=c হলে, a3+b3+3abc= কত ?

a+b=c হলে, a3+b3+3abc= কত ? Correct Answer c2

a3 + 1/a3 = (a + b)3 - 3ab(a + b) + 3abc = c3 - 3abc + 3abc = c3 (Ans)

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