a+b =6, ab=4 হলে  , a3+b3  = কত?

A    144

B    202

C    136

D    120

Solution

Correct Answer: Option A

 

a3+b3 = (a+b)3 - 3ab(a+b) = 63 +3*4*6 = 216 - 72 = 144

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