Toán Lớp 8: 2xmũ3y - 2xymũ3 - 4xymũ2 - 2xy

2x³y - 2xy³ - 4xy² - 2xy = 2xy.(x² - y² - 2y - 1) Chúc bạn học tốt

2x^3y-2xy^3-4xy^2-2xy =2xy.(x^2-y^2-2y-1) =2xy.[x^2-(y^2+2y+1)] =2xy.[x^2-(y+1)^2)] =2xy.(x-y-1) . (x+y+1)

Toán Lớp 8: 2xmũ3y - 2xymũ3 - 4xymũ2

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