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二次根式的混合运算是二次根式的主题内容，有关的概念和性质都是为二次根式的化简与运算做准备的．只有切实掌握常用解法和一些技巧，才能迅速、准确地解题．下面举例谈谈一些常用解法和技巧．一、直接使用运算律例1计算：解直接使用乘法分配律，得原式例2计算1997年呼和浩特
The secondary root-based mixed operation is the topic content of the secondary roots, and the concepts and properties are all for the preparation and operation of secondary roots. Only by mastering commonly used solutions and some techniques can you solve problems quickly and accurately. Here are some examples of common solutions and techniques. I. Directly use the operation rule 1 to calculate: The solution directly uses the multiplicative distribution law to get the original formula 2 to calculate Hohhot in 1997