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1. x + 1/x = 2 হল, x/x2+x+1 এর মান কত?
- A. 1
- B. 1
- C. 1
- D. 1
Answer: Option A
Explanation:
x + (1/x) = 2
বা, x² + 1 = 2x
বা, x² - 2x + 1 = 0
বা, (x - 1)² = 0
বা, x - 1 = 0
∴ x = 1
এখন, x/( x² + x - 1)
= 1/ (1² + 1 - 1)
= 1/1 = 1
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