The following video will explore the process of radical division. Rationalizing the denominator is a significant component in this exploration. The conjugate is introduced and applied.

You can find two specfic lessons devoted to rationalizing the denominator here:

https://mathpqjq.com/rationalizing-the-denominator/

https://mathpqjq.com/rationalizing-the-denominator-using-conjugates/

The first lesson above deals with monomial denominators, while lesson two deals with binomial denominators.

Be sure to check out the practice questions after watching the video.