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: 21

Answer

$(x-9)(x-10)$

Work Step by Step

The first term in each binomial must be x, since $x^2$ has no coefficient. The operation in each binomial must be subtraction, since the trinomial has a positive and a negative term. $-9+(-10)=-19$ and $-9\times(-10)=90$, so the other two terms are -9 and -10.
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