Civil Services HPPSC (Himachal Pradesh) HPAS Mock Test 2021 Quantitative Aptitude Algebra Identities

यदि \(x - \frac{1}{x} = 9\) है, तो \(x + \frac{1}{x}\) का मान ज्ञात कीजिये। 

1
√65
2
√77
3
√85
4
√83
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