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: 47

Answer

$2(a+5)(a-11)$

Work Step by Step

$2a^2-12a-110\longrightarrow$ 2 is a common factor $2(a^2-6a-55)$ $=2(\ \ \ \ \ \ \ \ )(\ \ \ \ \ \ \ \ )$ $=2(a\ \ \ \ \ \ )(a\ \ \ \ \ \ )$ $=2(a+\ )(a-\ )$ The factors of -55 must have unlike signs. $=2(a+5)(a-11)$ 5 and -11 have a sum of -6 and a product of -55.
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