Question

$\sqrt{3 + \sqrt{5} }$
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Answer 1

Refer the attachment above ..

Hope it all !!

Answer 2

$\green \bigstar \: answer$

RADICAL : A number which is represented as nth root of a rational number ,while the resultant is not a rational number

example :- √3

WE HAVE √3+√5 , which is not a radical because 3+√5 is not an integer

rationalising factor of it :-

rationalising factor of any number of kind √a±√bis√a ±√b

so for given number √3+√5 .

rationalising factor would be √3-√5