engineering recuitment BARC Stipendiary Trainee Category II 2023 Mock Test Quantitative Aptitude Algebra Identities
If \(X-{{1} \over x} = 11 \) and x > 0, what is the value of \((x^2-{{1} \over x^2})\) ?
1
\(-11\sqrt{123}\)
2
\(55\sqrt5\)
3
\(11\sqrt{123}\)
4
\(-55\sqrt5\)