Answer
7r$^3$-3r$^2$-9r
Work Step by Step
r(r$^2$-9)+3r$^2$(2r-1)
r(r$^2$)+r(-9)+3r$^2$(2r)+3r$^2$(-1)
r$^3$-9r+6r$^3$-3r$^2$
r$^3$+6r$^3$-3r$^2$-9r
7r$^3$-3r$^2$-9r
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: 29
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