Which rational exponent represents a square root?
A. 1 / 2
B. 3/2
C. 1/3
D. 1/4

1/2 rational exponent represents a square root.

Therefore, option A is correct.

Step-by-step explanation:

As we know that raising to the one-half power i.e. is the same

as taking the square root.

For example, taking the square root of 4 will determine:

so the expression becomes

            ∵

so, 1/2 rational exponent represents a square root.

Therefore, option A is correct.

answer: 193

explanation:

200-7 = 193