| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎% p! B( W7 z, f. k  d: z4 Q0 y& i  o" r
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(x - a) = x - a
0 d  F  Q8 a2 b7 @2 W  f# R(x - a) (x - b) = x^2 – ax – bx + ab
7 r2 `# ]9 ?* [- B) C4 z1 @3 i( X1 q(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc$ F9 _1 h8 P, S, d% G' }
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd. A9 I+ ?5 _2 [
如此種推，& A& Q- {4 Z6 s" ^+ t
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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[ 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7 q" k' d1 W  ^. N5 b- d

Originally posted by Triangel at 2007-4-18 01:26 PM:4 D( g- S) a# ^# H
(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:; p" n2 y( H7 [# g* E6 C
咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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& \9 q9 h5 @( U0 y$ G) ~  J: m3 \Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:: P' O: l  ?: B* B( j3 q/ s
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:
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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題/ F& s( K& e/ o: q9 s1 I1 T- t, X
似IQ題=.=
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  F8 W" L6 S* K# \- e$ T$ ?[ 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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(x-x)= 0 ，所以答案係0，is it?

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Bingo~

waikong

我係學校個學生會單張見過
( Z' Q7 O1 _4 x# y# w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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" e2 e; o% Y: b# ?7 J這條問題，貼落吹水版，名副其實  k- B- l' x7 n+ R/ H/ H9 G

. y  Q. d0 l4 ]) }2 j! _+ W[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]