Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 5 - Polynomials and Factoring - 5.4 Factoring Perfect-Square Trinomials and Differences of Squares - 5.4 Exercise Set: 54


a difference of squares

Work Step by Step

Both terms in the given expression, $ n^4-81 ,$ are perfect squares and their coefficients have opposite signs. Hence, the given expression is $\text{ a difference of squares }.$
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