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Let vectors A? =(2,1,−4), B? =(−3,0,1), and C? =(−1,−1,2)

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Let vectors A? =(2,1,−4), B? =(−3,0,1), and C? =(−1,−1,2). Calculate the following: 2B dot 3C 2(B dot 3C) V? 1 and V? 2 are different vectors with lengths V1 and V2 respectively. Find the following: V1 dot V1 If V1 and V2 are parallel, V1 dot V2