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Câu 19:

Cho số phức $z=1-2i$

Câu 19: Cho số phức z=1−2iz=1-2iz=1−2i. Phần ảo của số phức liên hợp với zzz là

Thông tin câu hỏi

Câu 19:

Cho số phức $z=1-2i$ . Phần ảo của số phức liên hợp với $z$ là