| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a8 M0 _  N/ C- H6 ~
(x - a) (x - b) = x^2 – ax – bx + ab
7 z6 l& U% I! \' x(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
9 o. r% Z1 O' B' h/ N7 A) L(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
0 k8 ]4 n$ Y3 q; L/ H如此種推，  m% @- P/ {1 ^  N; j6 w
(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
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Originally posted by Triangel at 2007-4-18 01:26 PM:
" @, J! o5 S0 I$ H; s(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:; E, G( Z' g) [; c% s$ P8 B$ v
咁難既=.="
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% G0 X$ P# X; [7 `[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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. s: t# J. J! _+ l7 d- Z; H2 WThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:" C0 r1 a& h  F
第一個答中有獎7 Q5 Z+ m8 w% G* Y/ L4 Y
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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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# G  a$ o1 q9 h3 p4 u7 m! t(x-x)= 0 ，所以答案係0，is it?

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; d" Z8 A9 x' r( U( @唔似a.math題
3 m  O- E) S" ?似IQ題=.=/ @9 c* T1 ]  G# J" @

* M. A' m3 L5 E[ 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:7 f, z- ~4 T: r7 J
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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
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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.........1 ]) r( j" \9 p* ^  s- H  K* k. d

! d7 O! s2 J: Z% k( t9 x9 l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 ]