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#29212 Bangla Language & Literature সহজ সূত্রাবলী Level 0

যদি √x + 1/√x = a হয়, তবে x2 + 1/x2 এর মান কত?

  1. A a4 + 4a2 + 2
  2. B a4 - 2a2 + 2
  3. C a4 - 4a2 + 2
  4. D a4 - 4a2 - 2
Answer: C - a4 - 4a2 + 2

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