Answer
$(b-1)(b-1)$
Work Step by Step
This is a perfect square trinomial, and hence
$$b^2-2b+1=(b-1)(b-1).$$
One can check as follows
$$b-1)(b-1).=b^2-b-b+1=b^2-2b+1
.$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 10 - Section 10.5 - Finding Factors of Special Products - Exercise - Page 354: 2
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