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二次根式a2的化简,综合了多方面的基础知识,因此解决这类问题学生感到较困难.若能按下列二个步骤,抓住一个关键,也许就得心应手了:(1)将被开方数配方;
The simplification of the secondary root formula a2 integrates the basic knowledge in many aspects. Therefore, it is more difficult for students to solve such problems. If you can grasp the key by the following two steps, you may be comfortable: (1) will be opened. Formula number;