Work Step by Step
First, we divide both sides by 6 to isolate $x^2$ to get $x^2=9$. Take the square root of both sides to get $x=\pm3$.
You can help us out by revising, improving and updating this answer.Update this answer
After 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.