Question

please answer this question​

Answer 1

$\sqrt{ \frac{ \sqrt{2} - 1}{ \sqrt{2} + 1} } \\ = > \sqrt{ \frac{1.4142 - 1}{1.4142 + 1} } \\ = > \sqrt{ \frac{0.4142}{2.4142} } \\ = > 0.4142$

I hope that helps you