唔識計呀~~ help me pls~~ thx~~
Factorize the following polynomials.
a) (2x+y)^(2) - y^(2)
b) (x-y)^(2) + 2(x-y) + 1
c) (x+y)^(2) - (x-y)^(2)
d) (4x-3y)^(2) - (x+y)^(2)
e) (3p+2s)^(2) - (p-2s)^(2)
factorization
2010-07-21 6:03 am
回答 (3)
2010-07-21 6:14 am
2010-07-21 6:58 am
2010-07-21 6:16 am
(2x+y)^(2) - y^(2)
(2x+y-y)(2x+y+y)
2x(2x+2y)
4x(x+y)
______________
(x-y)^(2) + 2(x-y) + 1
(x-y+1)^2
_____________
(x+y)^(2) - (x-y)^(2)
(x+y-x+y)(x+y+x-y)
(2y)(2x)
=4xy
______________
(4x-3y)^(2) - (x+y)^(2)
(4x-3y-x-y)(4x-3y+x+y)
(3x-4y)(5x-2y)
_______________
(3p+2s)^(2) - (p-2s)^(2)
(3p+2s-p+2s)(3p+2s+p-2s)
(2p+4s)(4p)
(p+2s)(8p)
2010-07-20 22:17:22 補充：
快我一步..........
(2x+y-y)(2x+y+y)
2x(2x+2y)
4x(x+y)
______________
(x-y)^(2) + 2(x-y) + 1
(x-y+1)^2
_____________
(x+y)^(2) - (x-y)^(2)
(x+y-x+y)(x+y+x-y)
(2y)(2x)
=4xy
______________
(4x-3y)^(2) - (x+y)^(2)
(4x-3y-x-y)(4x-3y+x+y)
(3x-4y)(5x-2y)
_______________
(3p+2s)^(2) - (p-2s)^(2)
(3p+2s-p+2s)(3p+2s+p-2s)
(2p+4s)(4p)
(p+2s)(8p)
2010-07-20 22:17:22 補充：
快我一步..........
收錄日期: 2021-04-23 20:42:46
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100720000051KK01690