Question

rationalise 1/1+√2
by step by step​

Answer 1

Step-by-step explanation:

$\frac{1}{ \sqrt{2} + 1 } = \frac{1}{ \sqrt{2} + 1 } \times \frac{ \sqrt{2} - 1}{ \sqrt{2} - 1 } \\ \\ = \frac{ \sqrt{2} - 1 }{2 - 1} = \sqrt{2} - 1.$