7年级数学题 分解因式

(x+y)^2-(x+y)^3

(x-y)^2-(x-y)^3

(x-y)^2-(y-x)^3

2(x-y)-3(y-x)^2

4ab(a+b)^2-6a^2b(a+b)

(x+y)^2(x-y)+(x+y)(x-y)^2

2a(a-3)^2-6a^2(3-a)+8a(a-3)

24xy^2 z^2(x+y-z)-32xyz(z-x-y)^2+8xyz^3(z-x-y)

(x+y)^2-(x+y)^3=(x+y)^2(1-x-y)

(x-y)^2-(x-y)^3=(x-y)^2(1-x+y)

(x-y)^2-(y-x)^3=(x-y)^2(1+x-y)

2(x-y)-3(y-x)^2=(x-Y)(2-3x+3y)

4ab(a+b)^2-6a^2b(a+b)=2ab(a+b)(2a+2b-3a)=2ab(a+b)(2b-a)

(x+y)^2(x-y)+(x+y)(x-y)^2=(x+y)(x-y)(x+y+x-y)=2x(x+y)(x-y)

2a(a-3)^2-6a^2(3-a)+8a(a-3)=2a(a-3)[(a-3)+3a+4]=2a(a-3)(4a+1)

24xy^2 z^2(x+y-z)-32xyz(z-x-y)^2+8xyz^3(z-x-y)=8xyz(x+y-z)(3yz+4+z^2)

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