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