a-1a=3 হলে a3-1a3 এর মান কত?

A 9
B 18
C 27
D 36

Correct Answer: 36

a - 1a = 3 হলে a3 - 1a3 = (a - 1/a)^3 + 3.a.1/a (a - 1/a) = 3^3 + 3.3 = 27 + 9 = 36
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