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      Question

      If (xβˆ’1x)=23β€“βˆš(xβˆ’1x)=23, what is the value of

      (x3+1x3) (x3+1x3) , given that x is a positive number?
      A 64 Correct Answer Incorrect Answer
      B 81 Correct Answer Incorrect Answer
      C 52 Correct Answer Incorrect Answer
      D 49 Correct Answer Incorrect Answer

      Solution

      The correct answer is C

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