Question: If a = 4, 0, 3) and b = 2, 1, 5, find |a| and the vectors a + b, a b, 3b, and

If a = 〈4, 0, 3) and b = 〈–2, 1, 5〉, find |a| and the vectors a + b, a – b, 3b, and 2a + 5b.

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