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: 61

Answer

$(a+9)(a-7)$

Work Step by Step

$a^2+2a-63$ has no common monomial factors. =$(\ \ \ \ \ \ \ \ \ )(\ \ \ \ \ \ \ \ \ )$ =$(a\ \ \ \ \ \ \ )(a\ \ \ \ \ \ \ )$ =$(a+\ \ )(a-\ \ )$ The factors of -63 must have dislike signs. =$(a+9)(a-7)$ -7 and 9 have a sum of 2 and a product of -63.
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