SSC SSC CPO Mock Test Series 2025 (Tier I & II) (DP SI & CAPF) Quantitative Aptitude Algebra Identities
If \({x^{2n}}\; + \;\frac{1}{{{x^{2n}}}}\; = \;k\), then find the value of \({x^n} - \frac{1}{{{x^n}}}.\)
1
\(\sqrt {k - 2} \)
2
\(\sqrt {k\; + \;2}\)
3
k – 2
4
k + 2