2018年秋七年级数学上册第2章整式的加减2.1整式第3课时多项式及整式(预习)课件(新版)新人教版.ppt

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第二章 整式的加减,2.1 整式,第二章 整式的加减,第3课时 多项式,第3课时 多项式,探究新知,活动1 知识准备,第3课时 多项式,答案,第3课时 多项式,活动2 教材导学,2(ab),(21x),第3课时 多项式,(4)鸡兔同笼,若鸡a只,兔b只,则共有头_个,脚_只 观察以上问题中所得出的四个式子,它们与上节课所学的单项式有什么区别?,(ab),(2a4b),

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