यदि \(x^4+{1\over x^4}=34\) है, जहाँ \(x>0\) है, तो \(x +{1\over x}\) का मान ज्ञात कीजिये। 

1
\(4\sqrt2 \)
2
4.25
3
\(2\sqrt2 \)
4
4

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