Answer
Please see the graph.
![](https://gradesaver.s3.amazonaws.com/uploads/solution/1f914972-b0c0-41a4-a216-889af7eba723/result_image/1534622253.png?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAJVAXHCSURVZEX5QQ%2F20240727%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20240727T022204Z&X-Amz-Expires=900&X-Amz-SignedHeaders=host&X-Amz-Signature=913888e43eea48cd0c4bdb6f323b19c5ef0d7dd3c827bc4fe6b1aeb3a5ac5534)
Work Step by Step
$x^2-16=0$
$x^2-16+16=0+16$
$x^2 = 16$
$\sqrt {x^2} = \sqrt {16}$
$x=4, -4$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.