Simplify the radical expression. explain how you got your answer.
√25/4

First, you should know that the equivalent of the root (√) is (power half) 
Ex: √5 ≡ (5)^(1/2) 

to solve this problem first we should make the dominator and nominator simple 
25 = 5² ; 4 = 2²

√ = 
((5/2)²)^1/2 = 5/2 
The final answer is