Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 1 - Foundations for Algebra - 1-6 Multiplying and Dividing Real Numbers - Practice and Problem-Solving Exercises: 23

Answer

-30

Work Step by Step

We recall that 30 to the second power is 30$\times$30, which equals 900. Thus, we find: $\sqrt {900} = \sqrt {30 \times 30} =\sqrt {30^{2}}=30$ However, there is a negative in front of the square root, so we make our answer -30.
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