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27-09-2021
Mathematics

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e) (2 + 4i). (9 -- 3i)

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discipulus discipulus

28-09-2021

Answer:

[tex](2 + 4i)(9 - 3i) \in \C \\ = 18 - 6i + 36i + 12 \\ = 30 + 30i \\ = 30(1 + i)[/tex]

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