^2表平方
x^2y-y^2z+z^2x-x^2z+y^2x+z^2y-2xyz
=x^2(y-z)-yz(y-z)+x(y-z)^2
=(y-z)(x^2-yz+xy-xz)
=(y-z)(x-z)(x+y)
不懂发消息问我
求此题的解法(因式分解),解法.把我饶晕了加分.
^2表平方
x^2y-y^2z+z^2x-x^2z+y^2x+z^2y-2xyz
=x^2(y-z)-yz(y-z)+x(y-z)^2
=(y-z)(x^2-yz+xy-xz)
=(y-z)(x-z)(x+y)
不懂发消息问我