If x+1x = 4, then x4+1x4=(a) 196(b) 194(c) 192(d) 190 – InterviewSolution

1.	If x+1x = 4, then x4+1x4=(a) 196(b) 194(c) 192(d) 190
Answer» If $x + \frac{1}{x}$ = 4, then $x^{4} + \frac{1}{x^{4}} =$ (a) 196 (b) 194 (c) 192 (d) 190

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