Answer
a) 2
b) 1
Work Step by Step
49 has two square roots since $7^2$ and $(-7)^2$ both equal 49.
0 has only one square root since 0 has no opposite value.
Algebra 1
by Hall, Prentice
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 - Lesson Check - Page 42: 7
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