Question: Find a + b, 4a + 2b, |a |, and |a - b|. (8, 1, 4), (5, 2, 1)

Find a + b, 4a + 2b, |a |, and |a - b|.

(8, 1, —4), Ь — (5, — 2, 1)

(8, 1, 4), (5, 2, 1)

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