24ab^2c^2(a+b-c)-32abc(a-c-b)^2+8abc^3(c-a-b)

问题描述:

24ab^2c^2(a+b-c)-32abc(a-c-b)^2+8abc^3(c-a-b)

24ab^2c^2(a+b-c)-32abc(a-c-b)^2+8abc^3(c-a-b)
=8abc[3bc(a+b-c)-4(a-c-b)^2+c^2(c-a-b)]