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 - 8-2 Multiplying and Factoring - Lesson Check - Page 494: 6



Work Step by Step

List the prime factors of each term. Identify the factors common to all terms. $21n^{3}=(3)\cdot 7\cdot(n\cdot n)\cdot n$ $18n^{2}=2\cdot(3)\cdot 3\cdot(n\cdot n)$ GCF= $(3)\cdot(n\cdot n)$, or $3n^{2}$. Answer: C.
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