# Square Roots and Radicals 19

Taught by YourMathGal
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Meets NCTM Standards:
Lesson Summary:

In this lesson on Square Roots and Radicals, the focus is on rationalizing denominators with binomial expressions. The examples given demonstrate two methods; one method is to multiply the numerator and denominator by the conjugate of the denominator, while the second method involves breaking up the numerator into individual terms and dividing each term by the denominator. Each method is shown to produce a different form of the answer, but both are considered to be correct. The lesson concludes with a reminder that there are many types of problems involving rationalizing denominators, and it's up to the student to determine the appropriate method to use.

Lesson Description:

Expands on problems from Square Roots and Radicals 18 with more examples rationalizing the denominator.

More free YouTube videos by Julie Harland are organized at http://yourmathgal.com