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      Question

      x = 7 - 4тИЪ3 then the value of x┬│+1/x┬│ is equal

      to?
      A 2702 Correct Answer Incorrect Answer
      B 2744 Correct Answer Incorrect Answer
      C 5702 Correct Answer Incorrect Answer
      D 3245 Correct Answer Incorrect Answer

      Solution

      x = 7 - 4тИЪ3 x + 1/x = 7 - 4тИЪ3 + 1/(7-4тИЪ3) x + 1/x = 7 - 4тИЪ3 + 7 + 4тИЪ3 x + 1/x = 14 So x┬│ + 1/x┬│ = (14)┬│ - 3 ├Ч 14 = 2744 - 42 = 2702 (x + 1/x = a, ┬аx┬│ + 1/x┬│ = a┬│ - 3a)

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