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thuy64921
2 năm trước
Thực hiện phép nhân và chia sau: a) (2x^4y– x^3 + x^2y^3). 5x^2y b) (10x^4 – 5x^3 + 3x^2) : 5x^2 c) (x – 4).(yx + 1) d) (x^3 + 4x^2 – x – 4) : (x + 1) e)(xy^2)^4:(xy^2)^2
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