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vohuong1346
2 năm trước
1)thực hiện phép tính: a)x/1-x +x^2+1/x^2-1 b)x^2-9/3x:x^2-6x+9/6x c)(2x^4+x^3-3X^2+5x-2):(x^2-x+1) 2)phân tích đa thức thành nhân tử a)x^2-3xy b)4x^2-25 c)x^2-5x-6 giúp em với ạ vote5sao và chọn là câu trả lời hay nhất
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