Express 14 upon root six ➖ root 5 ➖ root eleven with rational denominator
in real math, that is
14/√6 - √5 - √11
to get a rational denominator, multiply top and bottom by √6, giving
14√6/6 - √5 - √11
= (14√6 - 6√5 - 6√11)/6
14/√6 - √5 - √11
to get a rational denominator, multiply top and bottom by √6, giving
14√6/6 - √5 - √11
= (14√6 - 6√5 - 6√11)/6