Answer: 8√3.
Explanation:
First, look for any perfect squares that can fit into 192 snugly.
If we look for factors of 192, we can discover that the largest perfect square that can fit into it is 64 (and 3).
The √ of 64 is 8.
The √ of 3 cannot be simplified any further.
Thus, leaving us with our answer of 8√3.