Simplifying a rational expression with an imaginary number

The video tutorial explains how to simplify rational expressions with imaginary numbers in the denominator. It begins by introducing the concept of imaginary numbers and their representation as the square root of negative one. The tutorial then demonstrates the process of rationalizing the denominator by multiplying by the conjugate. It provides step-by-step guidance on simplifying expressions and concludes with tips for understanding and working with imaginary numbers.

What happens when you multiply by the imaginary unit 'i' in a rational expression?

Why is it important to remember that you cannot take the square root of a negative number?