Algebra 1

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

Chapter 7 - Exponents and Exponential Functions - 7-4 More Multiplication Properties of Exponents - Practice and Problem-Solving Exercises: 60

Answer

$30x^{2}$

Work Step by Step

Given expression : $(-5x)^{2} + 5x^{2}$ This becomes : $(-5x)^{2} + 5x^{2} = (-5)^{2}x^{2} + 5x^{2}$ (since $(ab)^{n}=a^{n}b^{n}$) This becomes : $25x^{2} + 5x^{2} = (25+5)x^{2}$ Final result : $30x^{2}$
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