:4xy²-4x²y-y³
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:4xy²-4x²y-y³
![:4xy²-4x²y-y³](/uploads/image/z/18530094-30-4.jpg?t=%EF%BC%9A4xy%26%23178%3B-4x%26%23178%3By-y%26%23179%3B)
4xy²-4x²y-y³
=-y(4x²-4yx+y²)
=-y(2x-y)²
再问: 4xy²-4x²y-y³ =-y(-4xy+4x²+y²) =-y(2x-y)² 这个对不?
再答: 对
=-y(4x²-4yx+y²)
=-y(2x-y)²
再问: 4xy²-4x²y-y³ =-y(-4xy+4x²+y²) =-y(2x-y)² 这个对不?
再答: 对
数学题4xy²-4x²y-y³
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