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数的开方是学习后面知识的基础,有些同学由于对平方根、算术平方根、立方根、无理数等概念理解不清,常常会出现各种各样的错误,下面对一些易犯的典型错误进行剖析,希望能够引起同学们的注意,避免以后再出现此类错误,学好这部分知识.一、因忽视平方根的性质而出错例1填空:(1)6~2的平方根是____;(2)(-11)~2的平方根是____.错解(1)6~2的平方根是6;
The number of prescribing is the basis for learning the back of knowledge, some students due to the square root, arithmetic square root, cube root, irrational number concepts such as unclear, often there will be a variety of mistakes, the following analysis of some of the typical mistakes easy to make , Hoping to arouse their attention, to avoid such mistakes again in the future, to learn this part of the knowledge.First, due to the nature of the neglected square root and a mistake Example 1 fill in the blank: (1) 6 ~ 2 square root is ____; (2) (-11) ~ 2 is the square root of _. Mismatched (1) 6 ~ 2 square root is 6;