平方根与立方根是意义很相近的两个概念，其定义和性质有许多相似之处，但也有区别．如果不注意区分，很容易引起混淆而出现错误．因此，我们一定要弄清它们之间的区别与联系．一、区别１．定义不同平方根：一般地，如果一个数的平方等于ａ，这个数就叫做ａ的平方根（或二次方 Square root and cube root are two concepts that are very similar in meaning. There are many similarities in their definitions and properties, but there are differences. If you do not pay attention to the distinction, it is easy to cause confusion and an error occurs. Therefore, we must make sure of the differences and connections between them. First, the difference 1. Defining different square roots: Generally, if the square of a number is equal to a, this number is called the square root of a (or quadratic