If \(x - \frac{1}{x} = 3\), find the value of \(x^4 + \frac{1}{x^4}\).

A. 81

B. 119

C. 123

D. 121

Doubtly AI Asked 27 Oct 2026 AI-generated · not yet verified ssc cpo Save WhatsApp Report

1 answer

Best answer

Answer: B. 119

Answer: (B) 119

\(x^2 + \frac{1}{x^2} = 3^2 + 2 = 11\).

\(x^4 + \frac{1}{x^4} = 11^2 - 2 = 119\).

Doubtly AI · 27 Oct 2026 AI-generated · not yet verified Report

Was this answer helpful?