Sections:

Watch: Video Lesson

Watch: Practice Set

Watch: Test Solutions

# Rationalize the Denominator

About:

Additional Resources:

In this section, we learn how to rationalize the denominator. We begin with the rules of a simplified radical. The first rule is that the radicand contains no factor other than one that is a: perfect square - square root, perfect cube - cube root, perfect fourth - fourth root,…Essentially, this is telling us if we can remove a rational number from the radical, we must do so to have a simplified result. Second, we learn that the radicand cannot contain any fractions. Lastly, we are told there is no radical present in any denominator. When we are presented with a scenario that contains a radical in our denominator, we use a process called rationalizing the denominator. This process changes the denominator from an irrational number into a rational number.

Rationalize the Denominator Resources:

Videos:

Khan Academy - Video Khan Academy - Video Virtual Nerd - Video Text Lessons:

Math WareHouse - Text Lesson OnLine Math Learning - Text Lesson Purple Math - Text Lesson Worksheets:

Kuta - Worksheet Online Math 4 All - Worksheet Math WareHouse - Worksheet + Show More +