Question
If n = 3 + √2, then find the value of (n +
1/n)².Solution
'n' = 3 + √2So,1/n = 1 / (3 + √2) × (3 - √2)/(3 - √2)
= (3 - √2) / (9 - 2)
= 3 - √2
Required value = (3 + √2 + 3 - √2)² = (6)² = 36
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