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plnamanh
2 năm trước
Bài 1 Tính giá trị của biểu thức 4x mũ 2 + 3x - 13 tại x=-2 Bài 2 cho tam giác MNK có MK = 3cm, MN = 7cm, NK = 5cm. So sánh các góc trong tam giác MNK
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