眼睛眼白别打了有血块:分解因式(要有答题过程)
来源：百度文库 编辑：高考问答 时间：2024/04/30 08:46:28
(1)(b-a)^2-2(a-b)+1 (2)(x+y)^2-6(y+x)+9 (3)(x+y)^2-4(x+y-1) (4)1/4-a^2+a^4 (5)1/4m(m-4)+1-n^2
(1)(b-a)^2-2(a-b)+1
=(a-b)^2-2(a-b)+1
=(a-b-1)^2
(2)(x+y)^2-6(y+x)+9
=(x+y-3)^2
(3)(x+y)^2-4(x+y-1)
=(x+y)^2-4(x+y) +4
=(x+y-2)^2
(4)1/4-a^2+a^4
=(a^2-1/2)^2
(5)1/4m(m-4)+1-n^2
=1/4m^2-m+1-n^2
=(1/2m-1)^2-n^2
=(1/2m-1+n)(1/2m-1-n)