人教版初二数学上册积的乘方练习题精选42Word文档格式.docx

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人教版初二数学上册积的乘方练习题精选42Word文档格式.docx

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(-2)7y•y9c5•c6

(-—)5xm•x3m+1x4m•x7m-1

(10a)3-(3b)3(-3b)2(xy5)2

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102)3(5ab2)3

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