[-3(x-y)^3]^2•(y-x)^3

问题描述:

[-3(x-y)^3]^2•(y-x)^3


:[-3(x-y)^3]^2•(y-x)^3 =-9(x-y)^6*(x-y)^3=-9(x-y)^9

[-3(x-y)^3]^2•(y-x)^3
=[9(x-y)^6]*[-(x-y)^3]
=-9(x-y)^9