大大

點解你個問題好似有d問題' i7 ^- i0 }/ d8 h

Originally posted by Triangel at 2007-4-18 01:26 PM:
8 X% w1 B; Y5 u. E5 b(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc6 v$ V7 [/ @/ C  b9 G$ f5 O0 l4 P* U
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$ ]. B3 [8 u1 k[ 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:5 P9 D- U3 W  p; w4 r3 q3 C
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$ I0 t5 W" z/ A3 V2 H' I0 u) ](x-x)= 0 ，所以答案係0，is it?

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; R( [) j7 T' [/ ]( C9 x唔似a.math題% y: J8 b( s1 v6 u- h1 i" ~  x9 |
似IQ題=.=
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[ Last edited by 大大 on 2007-4-18 at 01:57 PM ]