if x=5+2√6 then (x-1)/√x is equal to

Here is the link for the answer to your query:
https://www.meritnation.com/ask-answer/question/ifx-5-2-6-1-2thenx-1-x-1-2/squares-and-square-roots/3826695

Find $\sqrt{x}$ simply and put required values in the expressions to get final answer.