回复：回复：回复：回复：有没有好办法？

I think that it should be [a*3*(5-b)-2]=0 or [a*3*(5-b)-b)]=0. Shoud not both equal to 0.

Thanks

所有跟帖： 

• If they are not both 0, 5 is not only one root. -jinjing- ♀ (0 bytes) () 07/12/2011 postreply 07:11:08

• [a*3*(5-b)-2]=0 or [a*3*(5-b)-b)]=0.It can't get answer.Only bot -jinjing- ♀ (61 bytes) () 07/12/2011 postreply 10:37:39

• 5 -乱弹- ♂ (0 bytes) () 07/12/2011 postreply 20:13:46

• 愿闻其详. -jinjing- ♀ (0 bytes) () 07/13/2011 postreply 05:18:53