1. 7.6 Solving Radical Equations
p.437

2. Ex: Solve for x. Don’t forget to check your solutions!! **
** Use this idea to solve the radical equations.

3. Ex: Solve for y.
Don’t forget to check your solutions!!

4. Ex: Solve.
Don’t forget to check your solutions!!

5. Ex: Solve.
Don’t forget to check your solutions!!

6. Only use the positive answers when checking solutions.
Ex: Solve.
Only use the positive answers when checking solutions.
Factor this to solve!
Don’t forget to check your solutions!!
Solution

7. So, why didn’t one of the solutions work?
The solution that did not work is called an extraneous solution.
An extraneous solution is a false solution.
This is the reason why you MUST check all solutions!!

8. Assignment