Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 5 - Section 5.4 - Adding and Subtracting Polynomials - Exercise Set: 25

Answer

$2x^{2}+11x$

Work Step by Step

$(5x+8)-(-2x^{2}-6x+8)$ First, let's remove the grouping symbols. To remove the second parentheses, we need to change the sign of every term inside it: $(5x+8)-(-2x^{2}-6x+8)=5x+8+2x^{2}+6x-8=...$ Simplify by combining like terms: $...=2x^{2}+(5+6)x+(8-8)=2x^{2}+11x$
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