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二次根式是初中代数里的重要内容,由于二次根式的概念性强,隐含条件多,从而在二次根式的化简与运算时容易出现错误.为了帮助同学们学好二次根式,跳出陷阱,现就笔者多年来在批阅作业和试卷时发现的常见错误举例如下.
The secondary root is an important part of junior high school algebra. Because the concept of secondary roots has many concepts and many implied conditions, it is prone to errors in the simplification and calculation of secondary roots. To help students learn the secondary roots, jump out. The pitfalls are as follows: Examples of common mistakes I have discovered over the years in reviewing assignments and papers are as follows.