यदि 𝒙−𝟏/𝒙 = √𝟐𝟏 हो, तो 𝒙+𝟏/𝒙 का मान क्या होगा।

  • 1

    √𝟏𝟕

  • 2

    𝟒

  • 3

    𝟐√𝟓
     

  • 4

    𝟓

Answer:- 4

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