Question

if x= √2+1 so x^2+1/x^2​

Answer 1

$= {( \sqrt{2} + 1) }^{2} \\ = 2 + 1 = 3 \\ \\ \frac{1}{ {( \sqrt{ 2 } + 1)}^{2} } \\ \frac{1}{2 + 1} = \frac{1}{3} \\ \\ so \: = 3 + \frac{1}{3} \\ = \frac{9 + 1}{3} \\ = \frac{10}{3} \\ \\ \\ hope \: this \: helps \: you$