a+b = c হলে, a3 + b3 + 3abc = কত ?

A a3

B b3

C c3

Solution

Correct Answer: Option C

দেওয়া আছে , a+b = c,

তাহলে,
a3 +b3 +3abc
= (a+b)3 - 3ab(a+b)+3abc 
= c3 -3abc+3abc  (a+b = c বসিয়ে )
= c3    

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