The answer you are looking for is 9.
Solution/Explanation:
Writing out the expression first
√-3√-27
Don't worry. You are overthinking it. All you actually have to do is multiply both of them together
So,
√-3√-27=√81
Then, you will get √81.
This will simplify to 9. So, therefore, the final answer is 9.
Hope this helped you. Good day to you.