Toán Lớp 8: a. X.(4X^3 – 5XY + 2X)
b. X^2.(X + Y)+2X.(X^2 + Y)
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Toán Lớp 8: a. X.(4X^3 – 5XY + 2X)
b. X^2.(X + Y)+2X.(X^2 + Y)
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