The square root of the negative number $$-64$$ can be expres...

Question Analysis
This problem assesses the ability to convert the square root of a negative number into an imaginary number.

Key Concept Explanation
The square root of a negative number can be expressed using the imaginary unit . Specifically, .

Step-by-step Solution
1. Identify the positive number under the square root:
2. Apply the formula for the square root of a negative number: