分解因式-xy+4x^2y-4x^3y

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分解因式-xy+4x^2y-4x^3y分解因式-xy+4x^2y-4x^3y分解因式-xy+4x^2y-4x^3y-xy+4x^2y-4x^3y=-xy(1-4x+4x²)=-xy(2x-1

分解因式-xy+4x^2y-4x^3y
分解因式-xy+4x^2y-4x^3y

分解因式-xy+4x^2y-4x^3y
-xy+4x^2y-4x^3y
=-xy(1-4x+4x²)
=-xy(2x-1)²
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