1. Lesson 5

1.4. Discover

Mathematics 20-2 M5 Lesson 5

Module 5: Radicals

 
Discover
 

You will recall from Lesson 4 that there are two general rules when dividing radicals:

You learned to calculate rational numbers and radicals separately when dividing them. When you are dividing radicals, there are three different methods that you can use to simplify the radical expressions:

  • calculating rational numbers and radicals separately

  • rationalizing the denominator

  • eliminating common factors

textbook

Benito, Yvette, and Maria solved the same two questions, but each of them used a different strategy. Read “Example 3: Dividing radicals by a monomial” on pages 194 to 196 of your textbook. Pay close attention to each strategy for solving the same question.

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With a partner or in a small group, list the advantages and disadvantages of each strategy. Discuss which of the three strategies each of you prefers.

 

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