ଯଦି \(x^2 + \frac{1}{x^2}=66\) , ତେବେ \(x - \frac{1}{x}\) ର ମୂଲ୍ୟ ନିର୍ଣ୍ଣୟ କର । 

1
8
2
16
3
33
4
64

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