Answer
$-12$
It is a scalar.
Work Step by Step
$(u⋅v)-(u⋅w)=⟨3,3⟩⋅⟨-4,2⟩-⟨3,3⟩⋅⟨3,-1⟩=3(-4)+3(2)-[3(3)+3(-1)]=-12+6-(9-3)=-6-6=-12$
Algebra and Trigonometry 10th Edition
by Larson, Ron
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 595: 21
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