a − 1/a = 3 হলে, a3 − 1/a3 এর মান হবে-

A 18

B 24

C 36

D 42

Solution

Correct Answer: Option C

a3 − 1/a3
(a + 1/a)³+3.a.1/a((a - 1/a))
=(3)³+3(3)
=36

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