Answer
-0.28
Work Step by Step
2$a^{2}$ - 4$b^{2}$ =
We substitute a = 0.2 and b = -0.3 into the expression and simplify:
2 $\times$$(0.2)^{2}$ - 4 $\times$ $(-0.3)^{2}$ =
2 $\times$ 0.04 - 4 $\times$ 0.09 =
0.08 - 0.36 =
-0.28
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
Published by
Cengage Learning
ISBN 10:
1285194055
ISBN 13:
978-1-28519-405-9
Chapter 4 - Proportions, Percents, and Solving Inequalities - Chapters 1-4 Cumulative Review Problem Set - Page 186: 17
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