因式分解题快帮我 (19 20:28:38)1. (x+y) ²(x-y)+(x+y)(x-y_数学解答

因式分解题快帮我 (19 20:28:38)
1.   (x+y) ²(x-y)+(x+y)(x-y)²
2.   2a(a-3)²-6a²(3-a)+8a(a-3)
3.   24xy²z²(x+y-z)-32xyz(z-x-y)²+8xyz³(z-x-y)

人气：251 ℃　时间：2020-03-25 04:08:33

解答

1.(x+y) ²(x-y)+(x+y)(x-y)²=(x+y) (x-y)(x+y+x-y)=2x(x+y) (x-y)2.2a(a-3)²-6a²(3-a)+8a(a-3)=2a [(a-3)²-3a(3-a)+4(a-3)]=2a (a-3)[(a-3)+3a+4]=2a (a-3)[4a+1]3.24xy²z²(x+y-...