![](https://i.imgur.com/KJuPwSP.jpg)
[中學] 數與數線(已解答)
![](https://i.imgur.com/KJuPwSP.jpg)
請問
E選項這樣證明,a-b不是有理數
那a-b不是也有可能是虛數嗎?
謝謝大家
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05/13 22:06, , 1F
05/13 22:06, 1F
→
05/13 22:07, , 2F
05/13 22:07, 2F
→
05/13 22:18, , 3F
05/13 22:18, 3F
推
05/13 22:29, , 4F
05/13 22:29, 4F
→
05/13 22:45, , 5F
05/13 22:45, 5F
→
05/13 22:47, , 6F
05/13 22:47, 6F
※ 編輯: vm354cj6 (180.204.147.113), 05/14/2016 11:01:57