Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 2 - Multiplying and Dividing Fractions - 2.3 Factors - 2.3 Exercises: 34

Answer

$2^{2}\times5$

Work Step by Step

In order to find the prime factorization of 20, we can try to divide 20 by the first prime, 2. $20\div2=10$ Try to divide 10 by 2. $10\div2=5$ 5 itself is a prime number, so we cannot simplify any more. The prime factorization of 20 is $2\times2\times5=2^{2}\times5$.
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