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在分母中字母不為0時,就是.具體如下:分式第一節分式的基本概念形如A/B,A、B是整式,B中含有未知數且B不等於0的整式叫做分式(fraction).其中A叫做分式的分子,B叫做分式的分母.掌握分式的概念應注意:判斷…
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