Answer
$a^{2}+5a-14$
Work Step by Step
$(a+7)(a-2)=a(a-2)+7(a-2)=(a)(a)+(a)(-2)+(7)(a)+(7)(-2)=a^{2}-2a+7a-14=a^{2}+5a-14$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 5 - Section 5.5 - Multiplying Polynomials - Exercise Set - Page 379: 33
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