Work Step by Step
The factors of the equation are $(x-10)$ and $(x+5)$. After setting each to $0$, $x$ is $10$ and $-5$. Plugging in each will give you the square root of $0$ which is $0$, a real number.
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.