Algebra 2 - Learn to simplify a radical using the imaginary unit i, sqrt(-25)

The video tutorial explains how to handle the square root of a negative number by breaking it down into components. It emphasizes the difference between operations involving multiplication and addition, showing that sqrt(-25) can be separated into sqrt(25) and sqrt(-1) due to multiplication. The tutorial concludes by solving these components, explaining that sqrt(25) is 5 and sqrt(-1) is 'i', the imaginary unit.

What is the value of the square root of 25?

What does the square root of -1 equal, and why is it important?