a-1/a=3 হলে a3-1/a3 এর মান কত?
Solution
Correct Answer: Option D
a - 1/a = 3 হলে
a3 - 1/a3
= (a - 1/a)3 + 3.a.1/a (a - 1/a)
= 33 + 3.3
= 27 + 9
= 36
= (a - 1/a)3 + 3.a.1/a (a - 1/a)
= 33 + 3.3
= 27 + 9
= 36
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