Answer
$x^2+5x-14$
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
$$
(x + 7)(x - 2)= x (x - 2)+ 7(x - 2)\\
=x^2-2x+7x-14=x^2+5x-14
.$$
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: 39
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