另外一分钟怎么做出来这道题啊？

所有跟帖： 

• can not, unless an educated guess. -dr_yin- ♂ (0 bytes) () 04/08/2019 postreply 14:58:18

• sat II是可以用图形计算器的 -古代的事物- ♂ (139 bytes) () 04/08/2019 postreply 15:00:07

• The two complex roots are conjugate, so the product must be posi -dr_yin- ♂ (0 bytes) () 04/08/2019 postreply 15:06:09

• gamble on 17/2 once got xyz=17 -dr_yin- ♂ (0 bytes) () 04/08/2019 postreply 15:07:01