Answer
-x$^4$-3x$^2$-4
Work Step by Step
(A+B)(A-B)=A$^2$-B$^2$
(x+(2+x$^2$))(x-(2+x$^2$))
(x)$^2$-(2+x$^2$)$^2$
x$^2$-(2$^2$+2(2)(x$^2$)+(x$^2$)$^2$)
x$^2$-4-4x$^2$-x$^4$
-x$^4$-3x$^2$-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: 84
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