Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 1 - Some Basic Concepts of Arithmetic and Algebra - 1.2 - Prime and Composite Numbers - Problem Set 1.2 - Page 13: 65

Answer

$8$

Work Step by Step

Factor each number completely to obtain: $56 = 2 \cdot 2 \cdot 2 \cdot 7 \\64 = 2 \cdot 2 \cdot 2 \cdot 2 \cdot 2 \cdot 2$ Since three 2s are common to both, the greatest common factor of the two given numbers is: $2 \cdot 2 \cdot 2 = 8$
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