Answer
$8$
It is a scalar.
Work Step by Step
$(v⋅u)-(w⋅v)=⟨-4,2⟩⋅⟨3,3⟩-⟨3,-1⟩⋅⟨-4,2⟩=-4(3)+2(3)-[3(-4)+(-1)2]=-12+6-(-12-2)=-6-(-14)=-6+14=8$
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: 22
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