Answer
$$1-10x^2+25x^4
$$
Work Step by Step
This is a square of a difference of two terms, hence we have
$$
(1-5x^2)^2=1-2(5x^2)+(5x^2)^2=1-10x^2+25x^4
$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 10 - Review - Page 358: 9
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