Question

rationalisin factor of 3 + undroot2

Answer 1

rationalisin factor of

$3 + \sqrt{2}$

is

$3 - \sqrt{2}$

hope it helps.

Answer 2

Answer:

$\frac{1}{3 + \sqrt{2} } \times \frac{3 - \sqrt{2} }{3 - \sqrt{2} }$

$\huge \: = \frac{1}{9-2 }$

$\huge \: = \frac{1}{7}$

$\huge\red{note : - }$

$\huge \: (a + b)(a - b) =$

$\huge \: {a}^{2} - {b}^{2}$

I hope this helps you,mark as brainliest,follow me..