Answer
-2.97
Work Step by Step
$(1.2)^{2}-(2.1)^{2}=(1.2\times1.2)-(2.1\times2.1)=1.44-4.41=1.44+(-4.41)=-2.97$
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 1 - Sections 1.2-1.3 - Integrated Review - Algebraic Expressions and Operations on Whole Numbers - Page 29: 8
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