Answer
$ -2x^2 +x-6$
Work Step by Step
We simplify by removing the parentheses and then combine the like terms as follows
$$
(x^2 + 1) - (4x^2 + 5) + (x^2 + x - 2)=x^2 + 1- 4x^2 - 5+ x^2 + x - 2\\
= -2x^2 +x-6
.$$
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Appendix A - Review - A.3 Polynomials - A.3 Assess Your Understanding - Page A31: 38
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