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把(a±b~(1/2))~(1/2)化简。但这个公式比较难记,化简又繁,且容易弄错。在教学实践中,我认为采用下面方法较为简便。
Simplify (a±b~(1/2))~(1/2). However, this formula is hard to remember, simple and complicated, and easy to mistake. In teaching practice, I think it is easier to use the following method.