Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Appendix A - Review - A.4 Factoring Polynomials - A.4 Assess Your Understanding - Page A40: 53

Answer

$(x-2)(2x+1)$

Work Step by Step

By grouping the first two terms and the second two terms and then taking common factors, we have $$ 2x^2 - 4x + x - 2=2x(x-2)+(x-2)=(x-2)(2x+1) .$$
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