Answer
$y^2-4y-21$
Work Step by Step
$(y-7)(y+3)=(y\times y)+(y\times 3)+(-7\times y)+(-7\times 3)=y^2-4y-21$
Introductory Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-805-X
ISBN 13:
978-0-13417-805-9
Chapter 5 - Section 5.3 - Special Products - Concept and Vocabulary Check - Page 367: 3
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