Quantitative Aptitude Algebra Identities

x4 + y4 + x2y2 = 2 మరియు x2 + y2 - xy = 9 అయితే, \(\frac{x}{y}+\frac{y}{x}\) విలువ ఎంత?

1
3
2
\(-\frac{3}{2}\)
3
- 2
4
\(\frac{5}{4}\)
5

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