抛物线y=x的平方-x与x轴的两个交点间的距离等于
人气：493 ℃ 时间：2019-11-02 12:27:11
解答
x轴上y=0
y=x²-x=0
x(x-1)=0
x=0,x=1
所以距离=|0-1|=1
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