SOLUTION: If given that u <-1, 7> & v <4, -3> Find: (u � v)(u + v) A.) <25, 100> B.) <-25, 100> C.) <-75, -100> D.) <75, -100>

SOLUTION: If given that u <-1, 7> & v <4, -3> Find: (u � v)(u + v) A.) <25, 100> B.) <-25, 100> C.) <-75, -100> D.) <75, -100>

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Question 1070960: If given that u <-1, 7> & v <4, -3> Find: (u � v)(u + v)
A.) <25, 100>
B.) <-25, 100>
C.) <-75, -100>
D.) <75, -100>
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
If given that u <-1, 7> & v <4, -3> Find: (u � v)(u + v)
-----------
(u � v) = -1*4 + 7*-3 = -25
---
(u + v) = <3,4>
----------------------
-25*<3,4> = <-75,-100>
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