Intermediate Algebra: Connecting Concepts through Application

Published by Brooks Cole
ISBN 10: 0-53449-636-9
ISBN 13: 978-0-53449-636-4

Chapter 4 - Quadratic Functions - 4.5 Solving Equations by Factoring - 4.5 Exercises: 39

Answer

x=-5/4, x=9

Work Step by Step

$4x^2-31x-45=0$ Factor (4x+5)(x-9)=0 Set all factors equal to 0 4x+5=0 x-9=0 Isolate the variable to solve x=-5/4, x=9
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