来自韩红桂的问题
因式分解:(x+y-2z)立方+(y+z-2x)立方+(z+x-2z)立方
因式分解:(x+y-2z)立方+(y+z-2x)立方+(z+x-2z)立方
1回答
2020-01-16 09:01
因式分解:(x+y-2z)立方+(y+z-2x)立方+(z+x-2z)立方
因式分解:(x+y-2z)立方+(y+z-2x)立方+(z+x-2z)立方
最后那个括号有无打错?第三个括号改下的话.(x+y-2z)^3+(y+z-2x)^3+(z+x-2y)^3=[(x+y-2z)+(y+z-2x)][(x+y-2z)^2-(x+y-2z)(y+z-2x)+(y+z-2x)^2]+(z+x-2y)^3=(2y-x-z){(x+y-2z)[(x+y-2z)-(y+z-2x)]+(y+z-2x)^2}+(z+x...