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      Question

      If √r + (1/√r) = 4, then find the value of r +

      (1/r).
      A 12 Correct Answer Incorrect Answer
      B 14 Correct Answer Incorrect Answer
      C 15 Correct Answer Incorrect Answer
      D 17 Correct Answer Incorrect Answer

      Solution

      Given, √r + (1/√r) = 4
      On squaring both the sides,
      So, r + (1/r) + 2 Γ— √r Γ— (1/√r) = 16
      Or, r + (1/r) + 2 = 16
      So, r + (1/r) = 14

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