If \( \Large x + \frac{1}{x} = 3 \), then the value of \( \Large x^{2} + \frac{1}{x^{2}} \) is ----
Correct Answer: Description for Correct answer:
\( \Large (x + \frac{1}{x})^{2} = x^{2} + \frac{1}{x^{2}} + 2 \)
=> \( \Large (9 - 2) = x^{2} + \frac{1}{x^{2}} \)
\( \Large \therefore x^{2} + \frac{1}{x^{2}} = 7 \)
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