defence exam Agniveer Army Tradesman Mock Test Series 2025 Quantitative Aptitude Algebra Identities

If \(x + \frac{1}{x} = 3\), then the value of \({x^3} - \frac{1}{{{x^3}}}\) is:

1
2√3 
2
14√6
3
8√5
4
16√3 
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