| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a; G5 T1 n* y: a$ \
(x - a) (x - b) = x^2 – ax – bx + ab
- l0 B/ K4 n7 j3 J+ s8 V(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc1 R$ A5 G7 b2 r9 i
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
2 k, m! h" E! D# W- z% N. t% |如此種推，
& d# @% B# Y6 R" H4 ^2 H' 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:
% V) L- B* z/ A. i5 _8 k(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc$ s3 Y7 Z9 U' d" @
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7 [  q) R6 {1 j7 x[ 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:
% l! p! X, I3 {$ I( I- W3 N6 n咁難既=.="
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[ 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:" S, n3 Y/ M% y2 O/ K& G
第一個答中有獎% A: F3 b1 m9 V. \$ u
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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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9 Y8 \1 c* `9 d8 P6 u, O+ W% K唔似a.math題1 F4 W% m. L% @6 a3 C8 U1 m3 F
似IQ題=.=; t1 A6 b# x. g+ l$ b2 V6 ^
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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:4 I% x, I/ s% E

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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, W1 `; f6 }0 ]1 E4 i
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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7 R- u- e/ o7 B! f( I3 C" M6 b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 ]