Answer
$-3,0$
Work Step by Step
Let $u=x-1$ or treat $(x-1)$ as a unit, we have $(x-1)^2+5(x-1)+4=0 \Longrightarrow (x-1+1)(x-1+4)=0$, thus $x=-3,0$
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
Chapter 2 - Linear and Quadratic Functions - Chapter Test - Page 187: 6
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