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Câu 10:

Phần thực của số phức $\left( 2-i \right)\left( 1+2i \right)$

Câu 10: Phần thực của số phức (2−i)(1+2i)\left( 2-i \right)\left( 1+2i \right)(2−i)(1+2i) là:

Thông tin câu hỏi

Câu 10:

Phần thực của số phức $\left( 2-i \right)\left( 1+2i \right)$ là: