Question

find the rationalising factor for the denominator of the expression
$\frac{1}{3 + \sqrt{5} }$
​

Answer 1

Answer:

ok

Step-by-step explanation:

3-_/5 is right answer

Answer 2

Answer:

${3 - \sqrt{5} }$

Step-by-step explanation:

rationalizing factor gives rational denominator,

$\frac{1}{3 + \sqrt{5} } \times \frac{3 - \sqrt{5} }{3 - \sqrt{5} } = \frac{3 - \sqrt{5} }{(3 + {5) \times (3 - \sqrt{5}) }} = \frac{3 - \sqrt{5} }{9 - 5} = \frac{3 - \sqrt{5} }{4}$