Hello, thank you for taking the time to post your question!
On this type of question you want to factor and then cancel if possible. This one becomes
(x – 5)(x-5) / (x – 5), meaning that one of the (x-5) terms cancels to just leave you with
(x-5) / 1
=(x-5)
I hope that helps get you moving in the right direction! Feel free to reach out if you have any additional questions beyond that :)
Bill S.
02/23/16