x+(1/x) = √3 হলে, x³+(1/x³) এর মান কত?

A 0

B 6

C 4

D 2

Solution

Correct Answer: Option A

x+(1/x) = √3 

x3+ 1/x3 = (x+ 1/x)3 - 3.x.1/x (x+ 1/x) 

                 = (√3)^3 - 3.√3 = 3√3 - 3√3 = 0 

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