a+(1/a) = √3 হলে a³+(1/a³) = কত?

a+(1/a) = √3 হলে a³+(1/a³) = কত?

A 27

B 9

C 0

D 3

Solution

Correct Answer: Option C

a3 + 1/a3 = (a+1/a)3 - 3.a.1/a (a+1/a)

= (√3)3 - 3(√3)

= 3√3 - 3√3 = 0