Answer
$25x^2-40x+16$
Work Step by Step
We multiply each term of the first
polynomial by each term of the second polynomial. Then we add the products, as follows
$$
(5x - 4)(5x - 4)=5x (5x - 4)- 4(5x - 4)\\
=25x^2-20x-20x+16=25x^2-40x+16
.$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 5 - Section 5.5 - Multiplication of Polynomials - Exercise - Page 226: 48
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