{x+(1/x)}=2 হলে {x-(1/x)}² এর মান কত?
Solution
Correct Answer: Option A
দেওয়া আছে - {x+(1/x)}=2
অতএব,{x-(1/x)}² ={x+(1/x)}²-4.x.1/x
=(2)²-4
=4-4
=0
অতএব,{x-(1/x)}² ={x+(1/x)}²-4.x.1/x
=(2)²-4
=4-4
=0
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