Answer
$c=1$ or $c=2$.
Work Step by Step
By factorization, we have
$$c^2 -3c+2=(c-1)(c-2)=0.$$
Then we have
$$(c-1) =0, \quad \text{or} \quad (c-2)=0$$
that is $c=1$ or $c=2$.
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 11 - Section 11.1 - Solving Quadratic Equations by Factoring - Exercise - Page 364: 14
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