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数学
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把二次根式a√-a分之1中根号外的a移到根号里面,
人气:259 ℃ 时间:2020-03-25 19:31:36
解答
∵-1/a>0
∴a<0
∴a√-a分之1
=-√﹙-a分之1×a²﹚
=-√﹙-a﹚那根号外面的负号是哪来的呢?a是负数a√-a分之1的值是负数
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