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ntthanhhuyen1026
2 năm trước
cho 3mx - x^2 - 2 =0 1. giải pt với m=0 2. tìm điều kiện m để pt a. có 2 nghiệm phân biệt b. có nghiệm kép c. vô nghiệm p/s : giải giúp mk nha mk càn gấp , giải đc mk vote 5 * nha
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