ఒకవేళ \(\rm \left(x+\frac{1}{x}\right)=7 \) మరియు x > 1అయితే, \(\rm \left(x^3-\frac{1}{x^3}\right) \)దాని విలువ ఎంత?

1
174√5
2
144√5
3
164√5
4
154√5

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