大大

點解你個問題好似有d問題0 c9 A; k! W0 w2 j. o8 H

Originally posted by Triangel at 2007-4-18 01:26 PM:
2 X! k/ }; b) K7 J(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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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:( \+ a7 N6 t2 n

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! _3 N  B; u, m; I(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題& V# ~# R& t, J6 F: k
似IQ題=.=
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[ Last edited by 大大 on 2007-4-18 at 01:57 PM ]