$-15$ and $15$
Work Step by Step
Note that $15^2=225$, so $15$ is a real square root of 225, and $(-15)^2=225$, so $-15$ is a also real square root of 225. Thus, the real square roots of 225 are 15 and -15.
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.