If x 2 - 4x + 1 = 0, then what is the value of x^{2} + \frac{1}{x^{2}}?

RRB NTPC CBT I 5 Jan 2021 Shift 1 Paper

Question : 85 of 100

Marks: +1, -0

If x² - 4x + 1 = 0, then what is the value of

x^{2} + \;{1}/{x^{2}}?

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