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Mathematics, 24.08.2021 14:00 ughpali

Cho M, N,P, Q là các điểm di động trên các cạnh AB, BC, CD, DA của hình vuông cạnh a. Giá trị lớn nhất của S= MN^2+NP^2+PQ^2+QM^2 là A. 3a^2 B.4a^2 C.6a^2 D. căn 5a^2

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Cho M, N,P, Q là các điểm di động trên các cạnh AB, BC, CD, DA của hình vuông cạnh a. Giá trị lớn nh...
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