2019年春七年级数学下册第9章分式9.2分式的运算第2课时分式的乘方教学课件(新版)沪科版.pptx

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第9章 分 式,9.2 分式的运算,解:原式=-y.分式的值与x的值无关,他能算出这道题的正确结果.,

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