| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎1 L5 X0 S  q( W- _  X% h! L0 L4 C7 x
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(x - a) = x - a1 N- q! ^) \; c7 z1 z
(x - a) (x - b) = x^2 – ax – bx + ab7 X3 _  Z# L" f1 j5 m( O5 O
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc$ B+ Y6 F" M* E9 b
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd9 Z% s+ Z7 |/ _& K" b1 ?' @3 M
如此種推，' x/ X0 A- i! e0 T/ H1 C5 M1 H
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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[ Last edited by Triangel on 2007-4-18 at 01:52 PM ]

Triangel

Originally posted by 大大 at 2007-4-18 01:41 PM:
% y9 y. y3 ~2 D' S8 Z2 I( m+ Z) ~咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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Thanks! 更正啦

Triangel

Originally posted by littlenic at 2007-4-18 01:54 PM:" W' w  C+ {# m% B4 z2 p* J5 u+ i7 n

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(x-x)= 0 ，所以答案係0，is it?

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8 S7 K$ h* J9 S! a5 @Bingo~