x+(1/x) = 2 হলে, x/(x²+x-1) এর মান কত?
Correct Answer: Option C
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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