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带根号的,不好书写,有照片,

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带根号的,不好书写,有照片,

 
请问是怎么判断出
的?
带根号的,不好书写,有照片,
                                                                                                                                                                                                                                                                                                                                                                          

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
再问: 这步骤怎么得到的?一同加分给你。
再答: