Question

please answer the question​

Answer 1

Answer:

Here is your solution.. Thanks

Answer 2

Answer:

$\implies \sqrt{ \dfrac{ \sqrt{2} - 1}{ \sqrt{2} + 1} }$

Rationalize the denominator,

$\implies \sqrt{ \dfrac{ (\sqrt{2} - 1 )( \sqrt{2 } - 1) }{ (\sqrt{2} + 1)( \sqrt{2} - 1) } }$

$\implies \sqrt{ \dfrac {{ (\sqrt{2} - 1 )}^{2} }{2 - 1}}$

$\implies \sqrt{ {( \sqrt{2} - 1) }^{2} }$

$\implies \sqrt{2} - 1$

$\implies 1.4142 - 1$

$\implies 0.4142$