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ANH CHỊ NÀO LÀM ƠN GIÚP EM CÁI BÀI CHỨNG MINH LỚP 9 NÀY ĐƯỢC KHÔNG Ạ....!!!?

cho các số thực a,b,c đôi một khác nhau thỏa mãn 0<=a;b;c<=2. Chứng minh rằng: 1/(a-b)^2+1/(b-c)^2+1/(c-a)^2>=9/4

3 Answers

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  • Anonymous
    4 years ago

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  • Anonymous
    4 years ago

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  • Anonymous
    4 years ago

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