按照这个过程:(x+y)²(x-y)+(x+y)(x-y)²
=(x+y)(x-y)[(x+y)+(x-y)]
=(x+y)(x-y)(x+y+x-y)
=(x+y)(x-y)2x
=2x(x+y)(x-y)
1 .(x+y)²-(x+y)³
2. (x-y)²-(x-y)³
3. (x-y)²-(y-x)³
4. 2(x-y)-3(y-x)²
5. 4ab(a+b)²-6a²b(a+b)
6. (x+y)²(x-y)+(x+y)(x-y)²
7. 2a(a-3)²-6a²(3-a)+8a(a-3)
8. 24xy²Z²(x+y-z)-32XYZ(Z-X-Y)²+8XYZ³(Z-X-Y)