Answer
4x$^2$+4xy+y$^2$-9
Work Step by Step
(A+B)(A-B)=A$^2$-B$^2$
(2x+y-3)(2x+y+3)
((2x+y)-3)((2x+y)+3)
(2x+y)$^2$-(3)$^2$
4x$^2$+2(2x)(y)+y$^2$-9
4x$^2$+4xy+y$^2$-9
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: 85
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