谢谢您给我打气,

谢,您基本功佷好,开始,我误解题以为5是4重根,乱做一气,...如果5是仅有的重根,那-128/9也是答案.头设 A(X-5)^2+B　较好．

所有跟帖： 

• 回复：谢谢您给我打气, -wxcfan123- ♂ (234 bytes) () 07/15/2011 postreply 14:13:18

• If you solve a from I, should prove II does not have real root, -wxcfan123- ♂ (0 bytes) () 07/15/2011 postreply 14:41:19

• Wrong way is always as wrong reason. -jinjing- ♀ (152 bytes) () 07/15/2011 postreply 15:21:12

• Math is not riddle -15少- ♂ (655 bytes) () 07/15/2011 postreply 15:20:39

• 回复：Math is not riddle -jinjing- ♀ (273 bytes) () 07/15/2011 postreply 16:03:10

• Why make stupid calcul when -15少- ♂ (815 bytes) () 07/15/2011 postreply 17:33:47

• You totally misunderstanding me, f(x)=a(X-5)^2+b,why b=2? you te -jinjing- ♀ (37 bytes) () 07/15/2011 postreply 18:04:50

• you tell me,please,not 8. -jinjing- ♀ (0 bytes) () 07/15/2011 postreply 18:07:08

• Ms. Kang has explained, her explanation is not as clear as you d -15少- ♂ (461 bytes) () 07/16/2011 postreply 06:30:03

• Why f(8)=0?Cs we use a Thm, It is unknow for most people here. -jinjing- ♀ (493 bytes) () 07/16/2011 postreply 08:19:30

• You like calcul -15少- ♂ (329 bytes) () 07/16/2011 postreply 09:10:20

• 回复：You totally misunderstanding me, f(x)=a(X-5)^2+b,why b=2? you -15少- ♂ (1365 bytes) () 07/16/2011 postreply 06:09:01