| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a' I. k9 F$ q: H
(x - a) (x - b) = x^2 – ax – bx + ab
% k6 b$ z5 ]4 X% W(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
: x5 h) o7 g  Q2 [! e9 _# V1 I! e(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
3 P' z1 {  E) R6 J# ~如此種推，
, V) ]  ^; H+ J- I3 P(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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3 G$ ^; l: t3 X. x% S! U  b" t" Q[ 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' h, _6 D1 ?& J& n: n* g9 }' V/ {

Originally posted by Triangel at 2007-4-18 01:26 PM:$ e. s+ T  y2 Q3 r1 h$ Q
(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:
4 H% ?$ r; h1 n. y/ C, F6 L, t咁難既=.="2 |9 u6 A% l& u/ m( V! ~. r6 G. ]
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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8 G/ K$ y- U* H+ |Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
. Z! Y$ g/ H7 m- ~% c, j* K第一個答中有獎
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(x - ...

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% @* y2 O2 h4 F+ X% H. R' D(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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4 F' `( o1 \3 ?8 H(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
5 t8 M9 ~; E; P4 K6 W似IQ題=.=8 b9 _/ y9 ?' R( j

( T% W1 x' [8 [" Q[ 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:3 O/ q1 K6 D0 J7 b( L6 Q) D
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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
/ i* j; d' D/ t: Z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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; ]0 P" h- c" |! u這條問題，貼落吹水版，名副其實6 J) R9 w2 l, k: m# G
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]