If (x – frac1x)text= sqrt(21) text, then the value of (x^2 + frac1x^2) (x + frac – OfficerPath

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MCQ Practice

If (x - frac1x)text= sqrt(21) text, then the value of (x^2 + frac1x^2) (x + frac1x) is =?

Subject: MathematicsTopic: Simplification

A

42

B

63

C

115

D

120 E. 125

Correct Answer: C

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