Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 8 - 8.4 - Vectors and Dot Products - 8.4 Exercises - Page 597: 93

Answer

$|u-v|^2=|u|^2+|v|^2-2u\cdot v$

Work Step by Step

$|u-v|^2=(u-v)(u-v)=u\cdot u-u\cdot v-v\cdot u+v\cdot v=|u|^2+|v|^2-2u\cdot v$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.