Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 8 - Polynomials and Factoring - 8-3 Multiplying Binomials - Practice and Problem-Solving Exercises: 14

Answer

$x^2+x-20$

Work Step by Step

Make a table. $\ \ \ \ \ \ \underline{|\ \ \ \ \ \ \ x\ \ \ \ \ \ |\ \ \ \ \ \ \ \ 5\ \ \ \ \ |}$ $\ \ \ x\ |\ \ \ \ \ \ \ \ x^2\ \ \ |\ \ \ \ \ \ \ \ 5x\ \ \ |$ $-4\ |\ \ \ -4x\ \ \ |\ \ \ -20\ \ \ |$ The product is $x^2+5x-4x-20$ Combine like terms. $x^2+x-20$
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