Lesson 3

Discover

 

In earlier math courses, you learned that (6) + (7) = (6 + 7). Is this true for radicals? Does ?

 

Try This 1

 

Use a calculator to complete Adding Radicals Chart.

 

You will need to include brackets as you enter these calculations in your calculator. For example, to enter you will need to include brackets around the radicands. The following keystrokes will be needed for most calculators.

 

 

 

You also know from earlier math courses that 6(2) + 4(2) = (6 + 4)(2). Is this true for radicals? Does ?

 

Try This 2

 

Use a calculator to complete Mixed Radicals Chart. You will likely need to include brackets as you enter the expressions in your calculator.

 

Share 1

 

Based on your observations from both of the Try This activities, work with a partner to create a rule that applies to the addition of radical expressions.

 

Place a copy of your work in your course folder.