a + (1/a) = √3 হলে a2 + (1/a2) এর মান কত?

A 6

B 4

C 2

D 1

Solution

Correct Answer: Option D

দেওয়া আছে,  a + (1/a) = √3

আমরা জানি, 
a2 + (1/a2) = (a + 1/a)2 - 2.a.1/a
                  = (√3)2 - 2
                  = 3 - 2
                  = 1

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