railway RRB JE (CBT I + CBT II) Mock Test 2024 Quantitative Aptitude Algebra Identities

यदि (4y - \(\frac{4}{y}\)) = 13 है, (y2 + \(\frac{1}{y^2}\)) का मान ज्ञात कीजिए।

1
\(12\frac{11}{16}\)
2
\(10\frac{9}{16}\)
3
\(12\frac{9}{16}\)
4
\(8\frac{9}{16}\)
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