
Originally posted by Triangel at 2007-4-18 01:26 PM:! z& g5 L& z" u0 x
(x - a) (x - b) (x – c) = x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
! @+ h5 D) m; \9 K
Originally posted by 大大 at 2007-4-18 01:41 PM:
咁難既=.="6 L" V+ Q' o [9 @" v6 \& W
[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]
Originally posted by Triangel at 2007-4-18 01:26 PM:# B" y- [4 c% R' z
第一個答中有獎+ E( ` u8 n5 y/ M4 t
(x - ...
Originally posted by littlenic at 2007-4-18 01:54 PM:" B! J0 W8 k- @$ M
4 l: \' b. b+ s: ?7 K' Q- X2 T( P
(x-x)= 0 ,所以答案係0,is it?
Originally posted by littlenic at 2007-4-18 01:54 PM:6 a6 k) S4 i0 m" J/ L
6 Z: i, i8 Q, z, T0 w9 }7 G
(x-x)= 0 ,所以答案係0,is it?
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