Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 5 - Section 5.6 - Special Products - Exercise Set: 57

Answer

$a^{2}$ + 9a + 20

Work Step by Step

( a + 5 ) ( a + 4 ) use the commutative and associative properties multiply (a)(a) +(a)(4) +( 5)(a) + (5)(4) FOIL method $a^{2}$ + 4a + 5a + 20 $a^{2}$ + 9a + 20
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