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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