If a-1/a=3, then find the value of a3-(1/a)3

If a-1/a=3, then find the value of a³-(1/a)³

A 9

B 18

C 27

D 36

Correct Answer: Option D

দেওয়া আছে, a - (1/a) = 3

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

= (3)³ + 3. 3
= 27 + 9
= 36