2006-11-15 09:31 PM
西瓜仔a_a
F. 2 mathz
幫人 問 =) 識的請答 =]]
x(x+5)-3(x+5)
求 factorize
2006-11-15 09:33 PM
牙盈''
抽 common factor
(x+5)(x-3)
唔知o岩唔岩 .. 因為開始唔太明咩叫 factorize ...... XD
2006-11-15 09:36 PM
Athena`
factorize 係展開~~
x^2+ 5x- 3x-15
=x^2+ 2x- 15
2006-11-15 09:48 PM
西瓜仔a_a
thx 2位 =)
已經比左ans佢參考 =]]
2006-11-15 10:04 PM
牙盈''
[quote]原帖由 [i][[愛.戀.gill`[/i] 於 2006-11-15 09:36 PM 發表
factorize 係展開~~
x^2+ 5x- 3x-15
=x^2+ 2x- 15 [/quote]
如果 factorize 係展開
咁 expand 係咩 = 0 =
2006-11-15 10:13 PM
Phoebe:]
[quote]原帖由 [i][[愛.戀.gill`[/i] 於 2006-11-15 09:36 PM 發表
factorize 係展開~~
x^2+ 5x- 3x-15
=x^2+ 2x- 15 [/quote]
expand先系展開-___-`
2006-11-18 04:51 PM
小禎_emily
x(x+5)-3(x+5)
=(x+5)(x-3)
如果係抽因式就係咁啦...may be
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