Introductory Algebra for College Students (7th Edition)

Published by Pearson

Chapter 5 - Section 5.4 - Polynomials in Several Variables - Exercise Set - Page 376: 54

Answer

$x^2-25y^2$

Work Step by Step

Using $(a+b)(a-b)=a^2-b^2$ or the product of the sum and difference of like terms, the product of the given expression, $(x+5y)(x-5y) ,$ is \begin{array}{l}\require{cancel} (x)^2-(5y)^2 \\\\= x^2-25y^2 .\end{array}

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