Answer
$-15$ 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.
Algebra 2 Common Core
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133186024
ISBN 13:
978-0-13318-602-4
Chapter 6 - Radical Functions and Rational Exponents - 6-1 Roots and Radical Expressions - Practice and Problem-Solving Exercises - Page 364: 10
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