Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 5 - Exponents and Polynomials - 5.3 - Multiplying Polynomials - Problem Set 5.3: 85

Answer

$25x^2-4$

Work Step by Step

Using the equation $(a+b)(a-b)=a^{2}-b^{2}$, the expression, (5x-2)(5x+2), is equivalent to \begin{array}{l}\require{cancel} (5x)^2-(2)^2 \\\\= 25x^2-4 .\end{array}
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