Answer
x$^2$+2x-16
Work Step by Step
(4x$^2$+2x-7)-(3x$^2$+9)
=4x$^2$+2x-7-3x$^2$-9
=x$^2$+2x-16
Intermediate Algebra: Connecting Concepts through Application
by Clark, Mark; Anfinson, Cynthia
Published by
Brooks Cole
ISBN 10:
0-53449-636-9
ISBN 13:
978-0-53449-636-4
Chapter 3 - Exponents, Polynomials and Functions - Chapter Test - Page 289: 13
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