જો $x = \sqrt{7 + 4\sqrt{3}}$ હોય,તો $x + \frac{1}{x} = ......$

  • A
    $4$
  • B
    $6$
  • C
    $3$
  • D
    $2$

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$\sqrt[3]{4}, \sqrt[4]{5}, \sqrt[4]{7}$ અને $\sqrt[3]{8}$ માં સૌથી નાની સંખ્યા કઈ છે?

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