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If [a + (1/a)]2 – 2[a – (1/a)] = 12, then which of the following is a value of 'a'?

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If [a + (1/a)]2 – 2[a – (1/a)] = 12, then which of the following is a value of 'a'?
  • A– 8 + √3
  • B– 8 – √3
  • C– 8 + √5
  • DNone of these
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