Answer
$x=5$ or $x=9$.
Work Step by Step
By factorization, we have
$$x^2 -14 x+45=(x-5)(x-9)=0.$$
Then we have
$$(x-5)=0, \quad \text{or} \quad (x-9)=0$$
that is $x=5$ or $x=9$.
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 11 - Review - Page 380: 7
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