Calculus with Applications (10th Edition)

Published by Pearson
ISBN 10: 0321749006
ISBN 13: 978-0-32174-900-0

Chapter R - Algebra Reference - R.2 Factoring - R.2 Exercises - Page R-8: 8



Work Step by Step

Consider all the pairs of factors of $7$. Find the pair that sum to $-8$: $$(-7)\times (-1)=7$$ $$-7-1=-8$$ $$b^2-8b+7=(b-7)(b-1)$$
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