– 21 and A8 = XÃ + yI

Trigonometry (MindTap Course List)
8th Edition
ISBN:9781305652224
Author:Charles P. McKeague, Mark D. Turner
Publisher:Charles P. McKeague, Mark D. Turner
Chapter7: Triangles
Section7.6: Vectors: The Dot Product
Problem 51PS
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Question
If A? = 3A – 21 and A³ = XÃ + yI then x+ y=
A) -1
B) 0
C) 1
D) 2
Transcribed Image Text:If A? = 3A – 21 and A³ = XÃ + yI then x+ y= A) -1 B) 0 C) 1 D) 2
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