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1. a - 1a = 2 হলে a3 - 1a3 এর মান কত?

  • A. 12
  • B. 12
  • C. 12
  • D. 12

Answer: Option B

Explanation:

a3-1/a3
=(a-1/a)3+3.a.1/a(a-1/a)
=23+3.2
=14

 


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