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冲刺中考：一道二次根式中考填空题，难倒好多中差生，望题叹气
巧求含二次根号的代数式的值，千方百计变形是关键。
中考培优题集合99/168
App04:21
App03:30
App02:19
App06:07
App01:31
App04:22
App01:32
App04:14
App03:46
App05:12
App01:24
App01:50
App00:45
App02:03
App05:06
App05:53
App06:24
App05:51
App04:55打开App观看
