一个多项式除以(x-y)得多项式(x²-2xy+y²),则这个多项式为
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![一个多项式除以(x-y)得多项式(x²-2xy+y²),则这个多项式为](/uploads/image/z/8855284-4-4.jpg?t=%E4%B8%80%E4%B8%AA%E5%A4%9A%E9%A1%B9%E5%BC%8F%E9%99%A4%E4%BB%A5%28x-y%29%E5%BE%97%E5%A4%9A%E9%A1%B9%E5%BC%8F%EF%BC%88x%26%23178%3B-2xy%2By%26%23178%3B%EF%BC%89%2C%E5%88%99%E8%BF%99%E4%B8%AA%E5%A4%9A%E9%A1%B9%E5%BC%8F%E4%B8%BA)
一个多项式除以(x-y)得多项式(x²-2xy+y²),则这个多项式为
一个多项式除以(x-y)得多项式(x²-2xy+y²),则这个多项式为
一个多项式除以(x-y)得多项式(x²-2xy+y²),则这个多项式为
(Χ-γ)三次方
(x²-2xy+y²)·(x-y)
=[(x²+xy+y²)-3xy]·﹙x-y﹚
=(x²+xy+y²)·﹙x-y﹚-3xy·﹙x-y﹚
=x³-y³-3x²y+3xy²
=x³-3x²y+3xy²-y³
1/x-y=(x2-2xy+y2) 所以这个多项式为(x-y)3