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2022-07-10 21:54:13
biến đổi thành -[(căn x-2) -1]2 -[(căn x+1) -2]2+24 nhé bạn rồi suy ra max s=24 vs x=3 nhá
biến đổi thành -[(căn x-2) -1]2 -[(căn x+1) -2]2+24 nhé bạn rồi suy ra max s=24 vs x=3 nhá