Given vectors à = 8i + 0j – 8k, B = 2i – 4j + 7k, and , evaluate (a) Ā · Ā, (b) Ā, (c) (Ā · B)B, and (d) (B · B)à - B)à Ả · Ả 128 JÃ| = Ā ·B)B = ( i + j+ k) (B. B)à = | k) i + j+

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