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Câu 21:

Cho số phức z thỏa mãn $z\left( {1 + i} \right) = 7 + i$

Câu 21: Cho số phức z thỏa mãn z(1+i)=7+iz\left( {1 + i} \right) = 7 + iz(1+i)=7+i. Môđun của số phức z bằng

Thông tin câu hỏi

Câu 21:

Cho số phức z thỏa mãn $z\left( {1 + i} \right) = 7 + i$ . Môđun của số phức z bằng