Question

to write the lowest rationalising factor of
$\sqrt{5 - 3}$
​

Answer 1

$\huge \tt \purple{ = = > \sqrt{5 - 3} }$

$\tt \purple{It's \: lowest \: rationalising \: factor \: is :- }$

$\huge\tt \purple{ = = > \sqrt{5 + 3}}$