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数学
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7m﹙4m²p﹚÷7m²
人气：326 ℃ 时间：2020-01-14 12:17:36
解答
原式=7*4*m^3p÷7m^2
=28m^3p÷7m^2
=(28÷7)*（m^3÷m^2）*p
=4mp
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