(x-a)(x-b)(x-c)....(x-y)(x-z)
答案係幾多??
一條math
2006-11-24 6:18 am
回答 (5)
2006-11-24 6:33 am
✔ 最佳答案
(x-a)(x-b)(x-c)....(x-y)(x-z)= (x-a)(x-b)(x-c)....(x-x)(x-y)(x-z)
= (x-a)(x-b)(x-c)....(0)(x-y)(x-z)
= 0.
2006-11-24 3:37 pm
(x-a)(x-b)(x-c)......(x-y)(x-z)
We can show the other numbers:
(x-a)(x-b)(x-c)(x-d)(x-e)(x-f)(x-g)(x-h)(x-i)(x-j)......(x-w)(x-x)(x-y)(x-z)
In the 24th number:
(x-x)
x is x, they are the same number.
So:
x-x
=0
The answer is:
(x-a)(x-b)(x-c)(x-d)(x-e)(x-f)(x-g)(x-h)(x-i)(x-j)......(x-w)(x-x)(x-y)(x-z)
=(x-a)(x-b)(x-c)(x-d)(x-e)(x-f)(x-g)(x-h)(x-i)(x-j)......(x-w)(0)(x-y)(x-z)
=0
Any number X0 must be 0.
We can show the other numbers:
(x-a)(x-b)(x-c)(x-d)(x-e)(x-f)(x-g)(x-h)(x-i)(x-j)......(x-w)(x-x)(x-y)(x-z)
In the 24th number:
(x-x)
x is x, they are the same number.
So:
x-x
=0
The answer is:
(x-a)(x-b)(x-c)(x-d)(x-e)(x-f)(x-g)(x-h)(x-i)(x-j)......(x-w)(x-x)(x-y)(x-z)
=(x-a)(x-b)(x-c)(x-d)(x-e)(x-f)(x-g)(x-h)(x-i)(x-j)......(x-w)(0)(x-y)(x-z)
=0
Any number X0 must be 0.
2006-11-24 6:42 am
(x-a)(x-b)(x-c)....(x-y)(x-z)
(x-a)(x-b)(x-c)....(x-x)(x-y)(x-z)
(x-a)(x-b)(x-c)....(0)(x-y)(x-z)
因為任何數乘0都係等於0
所以答案會等於0
(x-a)(x-b)(x-c)....(x-x)(x-y)(x-z)
(x-a)(x-b)(x-c)....(0)(x-y)(x-z)
因為任何數乘0都係等於0
所以答案會等於0
2006-11-24 6:35 am
不如你計是最好不過的！！
你可以問ｔｅａｃｈｅｒ！
ｔｅａｃｈｅｒ的答應是最好不過的牙！！
你可以問ｔｅａｃｈｅｒ！
ｔｅａｃｈｅｒ的答應是最好不過的牙！！
2006-11-24 6:20 am
(x-a)(x-b)(x-c)....(x-y)(x-z) = (x-a)(x-b)(x-c)....(x-y)(x-z)
收錄日期: 2021-04-12 17:49:23
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061123000051KK04831