Final answer:
The expression 5√7+8√/7 is already in its simplest form.
Step-by-step explanation:
To simplify the expression 5√7+8√/7, we can add the like terms. However, we need to simplify the surds first.
The √7 and √/7 are not like terms, so we cannot combine them. Thus, the expression remains as 5√7+8√/7.
Therefore, the expression 5√7+8√/7 is already in its simplest form and cannot be simplified any further.
Learn more about simplifying surds