Lesson 3
1. Lesson 3
Module 5: Radicals
Lesson 3: Adding and Subtracting Radicals
Focus

© Sandor Kacso/12225139/Fotolia
Knowing how to work with a radical expression and simplify it correctly is needed in all branches of science, not just physics and astronomy. For example, chemists often combine different elements and substances. They need, however, to exercise caution in their labs. If a chemical reaction occurs too quickly, it may be violently explosive. If it occurs too slowly, the substance may remain as a pollutant in the environment for decades. When substances A and B combine to produce C, a radical equation involving the rate of reaction and concentration of substances is
In this lesson you will enhance your ability to work with radicals, including adding, subtracting, and simplifying them and their components.
This lesson will help you answer the following inquiry questions:
- How do you add radical expressions?
- How do you subtract radical expressions?
Assessment
- Lesson 3 Assignment
- Module 5 Project
All assessment items you encounter need to be placed in your course folder.

Save a copy of the Lesson 3 Assignment to your course folder. You will receive more information about how to complete the assignment later in this lesson.
Materials and Equipment
- calculator