Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 10 - Section 10.3 - Finding Binomial Factors - Exercise: 27

Answer

$(y+5)(y-4)$

Work Step by Step

$y^2+y-20$ has no common monomial factor. $=(\ \ \ \ \ \ \ \ )(\ \ \ \ \ \ \ \ )$ $=(y\ \ \ \ \ \ )(y\ \ \ \ \ \ )$ $=(y+\ )(y-\ )$ The factors of -20 must have unlike signs. $=(y+5)(y-4)$ 5 and -4 have a sum of 1 and a product of -20.
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