a+b+c=0 হলে a³+b³+c³ এর মান কত?

A 6abc

B Abc

C 3abc

D 9abc

Solution

Correct Answer: Option C

  a + b + c = 0 

=> a+b = -c 

=> (a+b)3 = (-c)

=> a3 + b3 + 3ab(a+b) = -c3 

=> a3 + b3 + 3ab(-c) = -c

=> a3 + b3 - 3abc = -c3 

    a3 + b3 + c3 = 3abc  

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