railway DFCCIL Executive 2025 Mock Test Quantitative Aptitude Algebra Identities

यदि \({\rm X} + \frac{1}{{\rm X}} = - 2\) है, तो x17 + x-17 + x12 + x-12 का मान क्या है? (x < 0)

1
-2
2
-1
3
1
4
0
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