Question
If √r + (1/√r) = 4, then find the value of r +
(1/r).Solution
Given, √r + (1/√r) = 4
On squaring both the sides,
So, r + (1/r) + 2 × √r × (1/√r) = 16
Or, r + (1/r) + 2 = 16
So, r + (1/r) = 14
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