题库搜索>问题求解PS-13638
If x ≠ 0, then (x+1/x)2-(x-1/x)2 =
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662352yo
不是（X+1）/X，是X+（1/X）。。。然后1/x + 1/x = 2/x。。。
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2022-12-30 16:27:28
209155prfa
笑死，错的答案正确率有80%
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2022-09-16 18:59:23
209155prfa
出的什么垃圾题
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2022-09-16 18:45:50
zikxianwai
答案没出错吗？怎么算出来是4/x？
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2018-06-03 19:27:33
裕如轶群回复zikxianwai
我算的也是4/x
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2019-02-19 22:34:59
520033xmow回复zikxianwai
这题答案给错了，随便代数进去算也不是这个答案
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2020-01-08 17:44:54
ALLAN FERRARA回复zikxianwai
是这道题出的有歧义
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2020-10-03 19:32:56
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