x(x+y)^2(1-y)-x(y+x)^2(提取公因式法)
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x(x+y)^2(1-y)-x(y+x)^2(提取公因式法)x(x+y)^2(1-y)-x(y+x)^2(提取公因式法)x(x+y)^2(1-y)-x(y+x)^2(提取公因式法)提取公因式法x(x+
x(x+y)^2(1-y)-x(y+x)^2(提取公因式法)
x(x+y)^2(1-y)-x(y+x)^2(提取公因式法)
x(x+y)^2(1-y)-x(y+x)^2(提取公因式法)
提取公因式法
x(x+y)^2(1-y)-x(y+x)^2
=x(x+y)^2(1-y)-x(x+y)^2
=x(x+y)^2[(1-y)-1]
=-xy(x+y)^2
uou
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