Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 8 - Polynomials and Factoring - 8-1 Adding and Subtracting Polynomials - Practice and Problem-Solving Exercises - Page 478: 43


The minus sign needs to be carried out to all three terms in the second set of parentheses.

Work Step by Step

The minus sign only attached to the first term $3x^2$, but not $-5x$ and $-6$. The $-5x$ and $-6$ become positive terms and the simplified answer should be: $x^2+4x+9$
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