计算:【(x-y)的2次幂】的3次幂乘(x-y)乘【(x-y)的3次幂】的4次幂

问题描述:

计算:【(x-y)的2次幂】的3次幂乘(x-y)乘【(x-y)的3次幂】的4次幂

[(x-y)^2]^3*(x-y)*[(x-y)^3]^4
=(x-y)^6*(x-y)(x-y)^12
=(x-y)^19