Wh-... What even is this? I don't... What.. My head.. I don't get it.. Sorry to say, I haven't advanced past a grade six level of math, and I don't even know what all of that is.
Open your textbook. You basically have to simplify the first part and use it to solve the second.
There's no way it's not in your textbook or something.
In English is this not asking to find x where
x = the square root of 5 plus 2 times the square root of 6 divided by 5 minus 2 times the square root of 6? There are no hidden values here so just needs working through. However for the order of operations to be correct the actual question posed is important, especially where the / is.