Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 8 - Polynomials and Factoring - 8-8 Factoring by Grouping - Practice and Problem-Solving Exercises - Page 531: 11


$2r^{2}$ , $-5$

Work Step by Step

$2r^{3}+12r^{2}-5r-30$ ...the first two terms: $2r^{3}=(2)\cdot(r\cdot r)\cdot r$ $12r^{2}=(2)\cdot 2\cdot 3\cdot(r\cdot r)$ GCF: $2r^{2}$ ...the last two terms. $-5r=(-1)\cdot(5)\cdot r$ $-30=(-1)\cdot 2\cdot 3\cdot(5)$ GCF: $-5$
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