College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter P, Prerequisites - Section P.2 - Real Numbers - P.2 Exercises - Page 15: 5


$|a-b|$, $7$

Work Step by Step

Take some cases and try it out. The distance between $5$ and $3$ is $|5-3|=2$. The distance between $6$ and $-3$ is $|-3-6|=9$. We take the distance from both to $0$ and subtract to receive the distance from eachother. Applying this to our example, we have $|-2-5|=|-7|=7$.
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