If x − 1/x = 3, then the value of x² + 1/x² is:
Show answer & explanation
Correct answer: C
Explanation
(x − 1/x)² = x² + 1/x² − 2
x − 1/x = 3
9 = x² + 1/x² − 2
x² + 1/x² = 11
SSC Selection Post - Higher Secondary Level - 28th July 2025 - Shift 2 • Quantitative Aptitude • Q44
If x − 1/x = 3, then the value of x² + 1/x² is:
Correct answer: C
Explanation
(x − 1/x)² = x² + 1/x² − 2
x − 1/x = 3
9 = x² + 1/x² − 2
x² + 1/x² = 11