Question

see the 2 question solve it fast

Answer 1

your questions are already solveed

Answer 2

Heya User ...

$\frac{1}{3 + \sqrt{5} } = \frac{1}{3 + \sqrt{5} } \frac{ 3 - \sqrt{5} }{ 3 - \sqrt{5}}$
$= \frac{ { 3 - \sqrt{5} }}{4}$

'.' 1/4 is a rational, the rationalizing factor , i.e, the factor which when multiplied with the given no. would rationalize it .... is ( 3 - √5 ) √√

Hope it  helps ^_^