Answer
x$^4$-a$^4$
Work Step by Step
(A+B)(A-B)=A$^2$-B$^2$
(x$^2$-a$^2$)(x$^2$+a$^2$)
(x$^2$)$^2$-(a$^2$)$^2$
x$^4$-a$^4$
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305115546
ISBN 13:
978-1-30511-554-5
Chapter P, Prerequisites - Section P.5 - Algebraic Expressions - P.5 Exercises - Page 36: 77
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