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1. (a + 1/a)2 = 3 হলে, a3 + 1/a3 = কত?
- A. 8
- B. 8
- C. 8
- D. 8
Answer: Option C
Explanation:
দেওয়া আছে,( a + 1/a) 2= 3
=√3
a3 + ( 1/a)3 = ( a + 1/a) 3 - 3. a.1/a ( a + 1/a)
= (√3) 3 - 3. √3
=3√3-3√3
=0
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