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Lesson 1

1. Lesson 1

1.4. Discover

Mathematics 20-2 M5 Lesson 1

Module 5: Radicals

 
Discover
 

In a previous math course, you learned that a radical expression has a radical symbol, a radicand, and an index, as shown in the following diagram.

 

This shows the different parts of a radical expression: radical symbol, radicand, and index.

 

Go to Radical to see more examples of radicals, including square roots and cube roots.

 

 

This is a screenshot for Radical.

 

This lesson involves two types of radical expressions: mixed radicals and entire radicals.

 

Mixed radicals have a coefficient in front of the radical symbol, and entire radicals do not have a coefficient. Here are some examples:

 

Mixed Radicals

Entire Radicals

: The coefficient is 12.

 

: The coefficient is 6.

 

: The coefficient is 5.

 

: The coefficient is 10.

 

 

 

Note: Since the 3 in this radical is small and raised, it is an index, not a coefficient. See the left column for examples that have coefficients.