ROOT FUNCTIONS Solving Radical Equations (Page 2 of 2)

We must modify the viewing window to see further to the right. Adjust the WINDOW settings as shown and re-graph the function. Then use CALC zero to find the x-intercept.

 WINDOW key....

 GRAPH key.

 Calculator screen image. Calculator screen image.
 2nd CALC key. 2: menu selection. 20 ENTER key. 40 ENTER key. 30 ENTER key. Calculator screen image.

We used a left bound of 20, a right bound of 40, and a guess of 30. The zero of the function is x = 27, so the solution set of the equation is {27}.
Copyright © 2010 Turner Educational Publishing
Go back to the previous page. Go to the next page. Go to the Table of Contents. Go to the Index page. Go to the Quiz page. Exit to the Home page.