Question: Let a = 2i - j + k, b = + 3j + 2k, and c = i + 2j - k. Find each of

Let a = 2i - j + k, b = + 3j + 2k, and c = i + 2j - k. Find each of the following:
a. a × b
b. a × (b + c)
c. a ∙ (b × c)
d. a × (b × c)

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