Bài 1: Số phức
Hướng dẫn giải Hoạt động 6 (Trang 133 SGK Toán Giải tích 12)
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" 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Hướng dẫn giải Bài 2 (Trang 133 SGK Toán Giải tích 12)
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Hướng dẫn giải Bài 3 (Trang 134 SGK Toán Giải tích 12)
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Hướng dẫn giải Bài 4 (Trang 134 SGK Toán Giải tích 12)
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Hướng dẫn giải Bài 5 (Trang 134 SGK Toán Giải tích 12)
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Hướng dẫn giải Bài 6 (Trang 134 SGK Toán Giải tích 12)
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