| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎- [9 X  ~- [+ @: ]. }6 X
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(x - a) = x - a
- @) _4 u. E% S  h) g6 B(x - a) (x - b) = x^2 – ax – bx + ab
6 y: W% k/ t. e9 K+ ~! ~6 S, \(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc! w- c' l" y/ a3 ?* \
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd& Y; r9 w1 n, Z! L+ @% E
如此種推，& u1 J, e1 t1 D7 q% v. b
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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7 r+ k3 d6 ^- U9 T# B- D. ][ Last edited by Triangel on 2007-4-18 at 01:52 PM ]

大大

點解你個問題好似有d問題! A6 V0 Y& Q0 U3 B/ C

Originally posted by Triangel at 2007-4-18 01:26 PM:  \5 g0 y1 A8 L' n
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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[ Last edited by 大大 on 2007-4-18 at 01:54 PM ]

Triangel

Originally posted by 大大 at 2007-4-18 01:41 PM:2 x5 B  f- x/ f& A/ P
咁難既=.="
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1 [( E/ W% h/ v8 B[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
# T5 m$ T& s5 y' q第一個答中有獎
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(x - ...

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(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:% q  a; M& X0 v

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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題+ }( ~& d! N" ^" D! Y& I5 R9 j
似IQ題=.=
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[ Last edited by 大大 on 2007-4-18 at 01:57 PM ]

Triangel

Originally posted by littlenic at 2007-4-18 01:54 PM:
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" b9 \7 T: L4 q/ k: v5 v(x-x)= 0 ，所以答案係0，is it?

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waikong

我係學校個學生會單張見過' Q  ?; W) t/ v+ K; h1 \
諗左一陣先諗到

playbr2

我吾識答啊http://i72.photobucket.com/albums/i162/xcopy/Monkey/049.gif~~~ http://i72.photobucket.com/albums/i162/xcopy/Monkey/022.gif

karen0123

(哭)~~~~~其實我都知係0.........
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) R: a' @) \& N- y* m7 {這條問題，貼落吹水版，名副其實
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]