256=
To solve the problem of finding , we will determine a number that, when squared, results in 256.
The operation we are performing is finding the square root, which is defined as follows: if , then is the square root of .
First, consider the list of perfect squares: 1 (because ), 4 (because ), 9 (because ), 16 (because ), all the way up to 256 which needs to be checked.
Let's test the number 16:
This confirms that 16 is the square root of 256.
Therefore, the solution to the problem is .
16