Simplify the expression (16/25)^1/2

4/5



Explanation:

Raising to the 1/2 power is the same as taking the square root
We're taking the square root of each piece inside the parenthesis
Take the square root of 16 to get 4
Take the square root of 25 to get 5
So the square root of (16/25) is equal to the fraction 4/5

Side Note: on a keyboard you can write it as sqrt(16/25) = sqrt(16)/sqrt(25) = 4/5