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什么是同类项
更新时间: 2021-04-21 22:10:07  

1、如果两个单项式,他们所含的字母相同,并且相同字母的指数也分别相同,那么就称这两个单项式为同类项。比如4y与5y,100ab与14ab,6c与6c。此外所有常数项都是同类项(常数项也叫数字因数)。

2、判断方法

两无关:与系数无关;与字母的排列顺序无关;

两相同:所含字母相同;相同字母的次数相同。

关键词: 什么 同类项

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