Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 5 Polynomials and Polynomial Functions - 5.3 Add, Subtract, and Multiply Polynomials - 5.3 Exercises - Skill Practice - Page 349: 26

Answer

The student did not distribute the negative.

Work Step by Step

In order to get rid of the parenthesis, the student should have distributed the negative to all of the values inside the parenthesis. If the student had done this, the answer would have been: $$-x^3+x^2-10x+6$$
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