x+y-z=0求证x^3+8y^3=z^3-6xyz
问题描述：
x+y-z=0求证x^3+8y^3=z^3-6xyz
答
题目出错啦,随便带入一组数,x=1,y=-1,z=0;满足x+y-z=0,但是不满足x^3+8y^3=z^3-6xyz
x+y-z=0求证x^3+8y^3=z^3-6xyz
题目出错啦,随便带入一组数,x=1,y=-1,z=0;满足x+y-z=0,但是不满足x^3+8y^3=z^3-6xyz