# 有咩功課唔識come in~~~

 ＊°雲尼斯杜萊 高級特務 [[..曼聯首席前鋒＿]] 發短消息 加為好友 當前離線 16# 大 中 小 發表於 2005-10-1 16:08  只看該作者 我都有野ｎｇ識ａｒ～！ １.Solve 4x-20x+25=0 ２.Solve(2x-3)-1=0 ３.By using quadratic formula,solve x-2x-1=0 (to 2 d.p.) ４.If 4x+3x+k=0 has no real roots,find the range of k ５.If 2x+kx+(k-2)=0 has equal root,find the value of k ６.If the product of two consecutive even number 168,find the two numbers ７.（a）Solve x+x-12=0 ７.（b）If the area of the triangle is 6cm,find the value of x ８.If X+kx+m=0 has equal roots 　Find the discriminant in terms of kamd m UID4084 帖子3067 精華0 積分1534 閱讀權限50 來自＊°奧脫福球場_]] 在線時間0 小時  查看個人網站 查看詳細資料 TOP
##### 引用:
Originally posted by ＊°雲尼斯杜萊 at 2005-10-1 04:08 PM:

１.Solve 4x-20x+25=0
２.Solve(2x-3)-1=0
３.By using quadratic formula,solve x-2x-1=0 (to 2 d.p.)
４.If 4x+3x+k=0 has no real roots,find the range of k
５.If 2x+kx+(k-2 ...
math定咩黎ga??

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##### 引用:
Originally posted by because at 2005-10-1 04:12 PM:

math定咩黎ga??

ｍａｔｈｓ　黎ｇａ～！

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##### 引用:
Originally posted by ＊°雲尼斯杜萊 at 2005-10-1 04:13 PM:

ｍａｔｈｓ　黎ｇａ～！

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##### 引用:
Originally posted by ＊°雲尼斯杜萊 at 2005-10-1 04:08 PM:

１.Solve 4x-20x+25=0
２.Solve(2x-3)-1=0
３.By using quadratic formula,solve x-2x-1=0 (to 2 d.p.)
４.If 4x+3x+k=0 has no real roots,find the range of k
５.If 2x+kx+(k-2 ...

５.If 2x+kx+(k-2)=0 has equal root,find the value of k

2x+kx+(k-2)=0
3+ 1.5 k + k-2=0 (proved in (2))<..括號果d可以ng寫...
1-2.5k=0
2.5k = -1
k=-1/2.5
=-0.4....

ng知岩ng岩ga

7(a)

x+x-12=0
2x-12=0
2x=12
x=6...

[ Last edited by because on 0505-10-1 at 04:31 PM ]

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 小邱子 高級特務 不知小蚊你死了去邊的可憐版主 發短消息 加為好友 當前離線 21# 大 中 小 發表於 2005-10-1 17:30  只看該作者 你打中文我先識 UID3195 帖子2256 精華0 積分1128 閱讀權限50 來自宇宙 在線時間0 小時  查看詳細資料 TOP
##### 引用:
Originally posted by because at 2005-10-1 03:55 PM:

ＩＳ．．．
We need energy from food to do activities, to keep our bodies _________________ and to _______________.

f2既....= ="

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##### 引用:
Originally posted by 小邱子 at 2005-10-1 05:35 PM:

ｏ．．．甘算ｌｏｗ．．．．

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In my opinion you are not right. I suggest it to discuss. Write to me in PM, we will communicate.

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