[-0.3(a-b)][4(a-b)^m-1][-2/3(a-b)^2m]

问题描述:

[-0.3(a-b)][4(a-b)^m-1][-2/3(a-b)^2m]

[-0.3(a-b)][4(a-b)^m-1][-2/3(a-b)^2m]
=[(-3/10)×4×(-2/3)](a-b)^(1+m-1+2m)
=4/5(a-b)^3m