Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 4 - Polynomials - 4.4 Addition and Subtraction of Polynomials - 4.4 Exercise Set: 44

Answer

$-2x^3+x^2+2x-3$

Work Step by Step

Removing the grouping symbols, then the given expression, $ (-4x^2+2x)-(-5x^2+2x^3+3) $, is equivalent to \begin{array}{l} -4x^2+2x+5x^2-2x^3-3 .\end{array} By combining like terms, then \begin{array}{l} -2x^3+(-4x^2+5x^2)+2x-3 \\\\= -2x^3+x^2+2x-3 .\end{array}
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