Discuss Forum
1.
- A. 20
- B. 20
- C. 20
- D. 20
Answer: Option D
Explanation:
a - - 1/a = 5
a2 + 1/a2
= (a)2 + (1/a)2
= (a - - 1/a)2 + 2.a.1/a
= (5)2 + 2
= 25 + 2
= 27 ans
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1.
Answer: Option D
Explanation:
a - - 1/a = 5
a2 + 1/a2
= (a)2 + (1/a)2
= (a - - 1/a)2 + 2.a.1/a
= (5)2 + 2
= 25 + 2
= 27 ans
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