-6x²y(a-b)³xy²(b-a)²
=-6x²y(a-b)³xy²(a-b)²
=-6x^(2+1)y^(1+2)(a-b)^(3+2)
=-6x^3y^3(a-b)^5没看懂=-6x^3y^3(a-b)^5-6x的3次方y的3次方(a-b)的5次方