What is the square root of 45? (step by step working plz)

if you simplify it you would have to find factors of 45 that are perfect squares, for example, the square root of 9 times the square root of 5 is the square root of 45 so if you want to simplify it you would need to take the square root of 9 which is 3

so if you put in simplest form you would get 3 root 5