平方根是初中数学比较容易混淆的一个概念,其误区有哪些呢?下面本文结合例题介绍平方根学习的四个误区,供同学们参考:误区1:混淆平方根与算术平方根的意义例1判断正误:(1)((-8)2)~(1/2)=-8,(2)((-8)2)~(1/2)=±8,(3)((+8)2)~(1/2)=±8.错解:(2)对,(1)(3)错.错因剖析:不能正确理解平方根、算术平方根的意义及表示.a~(1/2)表示a的算术平方根,±a~(1/2)表示a的平方根,-a~(1/2)表示的算术平方根的 Square root is a concept of junior high school math is more confusing, what are the errors? This article combines the four examples of square root learning error introduced for the students to refer to: Myth # 1: confusing the meaning of square root and the square root of arithmetic Example 1 Judgment: 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 (1/2) = ± 8. Misunderstanding: (2) Yes, (1) (3) wrong. Error analysis: can not correctly understand the square root, meaning and expression of the arithmetic square root. A ~ (1/2) that a ± a ~ (1/2) represents the square root of a, -a ~ (1/2) represents the arithmetic square root of