Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter R - Review of Basic Concepts - Chapter R Test Prep - Review Exercises - Page 83: 66

Answer

$(r-6p)(r+7p)$

Work Step by Step

Step 1. Find factors of $-42$ as $(-6)(7)$ and the sum of the factors as $-6+7=1$ Step 2. We have $r^2+rp-42p^2=(r-6p)(r+7p)$
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