25+4
Rewrite 25 as 52.
52+4
Pull terms out from under the radical, assuming positive real numbers.
5+4
Rewrite 4 as 22.
5+22
Pull terms out from under the radical, assuming positive real numbers.
5+2
5+2
Add 5 and 2.
7
Simplify square root of 25+ square root of 4