x^2-2xy+y^2除以x-y等于多少

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x^2-2xy+y^2除以x-y等于多少x^2-2xy+y^2除以x-y等于多少x^2-2xy+y^2除以x-y等于多少x^2-2xy+y^2=(x-y)²x^2-2xy+y^2除以x-y=

x^2-2xy+y^2除以x-y等于多少
x^2-2xy+y^2除以x-y等于多少

x^2-2xy+y^2除以x-y等于多少
x^2-2xy+y^2=(x-y)²
x^2-2xy+y^2除以x-y=(x-y)²/(x-y)=(x-y)
不懂再问哦

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

x^2-2xy+y^2=﹙x-y﹚²
﹙x-y﹚²÷﹙x-y﹚=x-y
所以x^2-2xy+y^2除以x-y等于x-y