二次根式运算是初中二年级学习的主要内容之一 ,运算时最容易出现运算过程的错误 ,若注意当中的运算规律和一些题中的隐含条件 ,就会少出错误 ,起到事半功倍的作用 ,那么怎样才能少出错误呢 ?请同学们注意如下几个问题 :一、注意被开方数不能为负数在二次根式的运算中 ,由于学? The secondary roots operation is one of the main contents of the second grade of junior middle school. The calculation process is most likely to be mistakes. If you pay attention to the operation rules and the implicit conditions in some questions, you will get fewer errors and do more with less. The role, then how can we make fewer mistakes? Ask the students to pay attention to the following questions: First, pay attention to the number of open squares can not be negative in the secondary root-type operation, because of learning?