other govt exam CSIR Junior Secretariat Assistant (JSA) 2025 Mock Test Quantitative Aptitude Algebra Identities
If \( \left({x^2} + {{ 1} \over x^2}\right) = 6\), and 0 < x < 1, what is the value of \( {x^4} - {{ 1} \over x^4}\)?
1
\({24 \ \sqrt{2}}\)
2
\({-24 \ \sqrt{2}}\).
3
.\({-12 \ \sqrt{10}}\)
4
.\({12 \ \sqrt{10}}\)