大大

點解你個問題好似有d問題5 n" b5 r- ~% G  j7 l

Originally posted by Triangel at 2007-4-18 01:26 PM:( z6 a/ F4 z9 v8 l
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc& h/ P. n: f: {8 r! ]  d8 a
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[ Last edited by 大大 on 2007-4-18 at 01:54 PM ]

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:) h7 B& O# t/ |

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. ^0 J# E! q/ `* [3 s(x-x)= 0 ，所以答案係0，is it?

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( f2 B0 X; H2 Y; Q1 }似IQ題=.=* W$ @- C" A. t, ~% ~+ R( e
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[ Last edited by 大大 on 2007-4-18 at 01:57 PM ]