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 - Page 372: 45



Work Step by Step

$(-a^{2}+1)-(a^{2}-3)+(5a^{2}-6a+7)$ Remove all the parentheses. To remove the second one, change the sign of every term inside it: $-a^{2}+1-a^{2}+3+5a^{2}-6a+7=...$ Simplify by combining like terms: $...=(-1-1+5)a^{2}-6a+(1+3+7)=...$ $...=3a^{2}-6a+11$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.