视x-y为一整体,合并2(x-y)^6-1/2(y-x)^6

Question

视x-y为一整体,合并2(x-y)^6-1/2(y-x)^6

Answer 1

2(x-y)^6-1/2(y-x)^6
=2(x-y)^6-1/2(x-y)^6
=3/2(x-y)^6