[질문] 엑스세제곱더하기와이세제곱더하기제트세제곱어떻게바꿔요?

x^3+y^3+z^3을더간단하게만드는것은불가능하며전개를한다면(고1과정) (x+y+z)(x^2+y^2+z^2-xy-yz-zx)+3abc 또는1/2(x+y+z){(x-y)^2+(y-z)^2+(z-x)^2}+3abc입니다