If \(x + \frac{1}{x} = 3\), what is the value of \(x^4 + \frac{1}{x^4}\)?

A. 45

B. 47

C. 49

D. 81

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

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Answer: B. 47

Answer: (B) 47

\(x^2 + \frac{1}{x^2} = 9 - 2 = 7\). Then \(x^4 + \frac{1}{x^4} = 7^2 - 2 = 47\).

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

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