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二次根式是初中数学的重要内容,也是中考的一个热点.计算二次根式时要注意下列几个要点.一、性质(a~(1/2))~2=a(a≥0)的运用例1在实数范围内分解因式
Secondary root is an important part of junior high school mathematics, is also a hot spot in the test. Calculate the secondary root should pay attention to the following points. First, the nature (a ~ (1/2)) ~ 2 = a (a ≥ 0) Example 1 Decomposition factor in the real number range