Civil Services TNPSC Group 1 (New Syllabus) Mock Test 2025 Quantitative Aptitude Algebra Identities

If x4 + y4 + x2y2 = 27 and x2 + y2 - xy = 9, then what is the value of \(\frac{x}{y}+\frac{y}{x}\)?

1
3
2
\(-\frac{3}{2}\)
3
- 2
4
\(\frac{5}{4}\)
5
Answer not known
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