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যদি x2 - 7x + 1 = 0 হয় তবে (x + 1 / x) এর মানটি নির্ণয় করুন। 

  1. 3
  2. 7
  3. -7
  4. -৩

Answer (Detailed Solution Below)

Option 2 : 7
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Detailed Solution

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প্রদত্ত: 

x2 - 7x + 1 = 0

গণনা:

x2 - 7x + 1 = 0

এক্স দ্বারা ভাগ করা হ'ল: 

⇒ x - 7 + 1/x = 0

⇒ x + 1/x = 7

∴ x + 1/x এর মান = 7  

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