Answer:
simplified answer will be the number which is inside square root.
Explanation:
Given that there is square root of a number.
Say the number is represented by "n"
Then square root of n will be :

Now it is saying square of the square root of number means we have to take square of
so we get:

Now we will simplify as per instruction.
We know that "square" and "square root" are inverse operation of each other so they will cancel each other and leave only the number that was inside root.

So the required rule can be written as:
"Square of square root of a number "n" = n. Where n is given number."