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Câu 34:

Mô-đun của số phức $z=\left( 1+2i \right)\left( 2-i \right)$

Câu 34: Mô-đun của số phức z=(1+2i)(2−i)z=\left( 1+2i \right)\left( 2-i \right)z=(1+2i)(2−i) là

Thông tin câu hỏi

Câu 34:

Mô-đun của số phức $z=\left( 1+2i \right)\left( 2-i \right)$ là