
Originally posted by Triangel at 2007-4-18 01:26 PM: Z' [4 v8 I. {- R
(x - a) (x - b) (x – c) = x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
Originally posted by 大大 at 2007-4-18 01:41 PM:
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]
Originally posted by Triangel at 2007-4-18 01:26 PM:9 H3 |4 n; E0 F+ D2 A
第一個答中有獎) J3 B6 a( d6 i' V
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(x - ...
Originally posted by littlenic at 2007-4-18 01:54 PM:
2 h) B' W( F9 @/ |+ K$ M! v- X
(x-x)= 0 ,所以答案係0,is it?
Originally posted by littlenic at 2007-4-18 01:54 PM:& _' b! S( }4 R
(x-x)= 0 ,所以答案係0,is it?
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