Using only 4 5's get 13 and 17 ?

Question

For example if you wanted to get 2 you would do 5-5^0-5^0-5^0

^0 = exponent of 0

You cannot use factorials or decimals, the goal is to get 13 using only 4 5's and 17 using only 4 5's, however exponents are allowed, good luck on helping me out!

Answer 1

13=[(5+5)/5]^3+5

17=[(5+5)/5]^4+5^0