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mt438396
2 năm trước
Bài 1 Thực hiện phép tính : a,(2x^2-3x)(5x-2x+1) b,(x-2y)(3xy+5y^2+x) Hai bài c và d làm bằng cách dùng phân thức c,( x^2-25):(5-x) d,(x^5+x^3+x^2+1):(x^3+1)
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