代数式的含义

  • 时间:2020-04-13 17:06:25
  • 分类:数学世界
  • 阅读:153 次

代数式的含义:什么是代数式?

代数式:由数和表示数的字母经有限次加、减、乘、除、乘方和开方等代数运算所得的式子,或含有字母的数学表达式也称为代数式。单个数字或数字连接的整式也是代数式。

例如:ax+2b,-2/3,b2/26,√a+√2等。

1、不包括不等号(≠、≤、≥、<、>、≮、≯)、约等号≈。

2、可以有绝对值。例如:|x|,|-2.25| 等。

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