已知x/2+y/2-z/2=3,求x^2+2xy+y^2-2xz-2yz+z^2

来源：学生作业帮助网编辑：作业帮时间：2024/05/01 14:34:52

已知x/2+y/2-z/2=3,求x^2+2xy+y^2-2xz-2yz+z^2
已知x/2+y/2-z/2=3,求x^2+2xy+y^2-2xz-2yz+z^2

已知x/2+y/2-z/2=3,求x^2+2xy+y^2-2xz-2yz+z^2
X+Y-Z=6
（X+Y-Z）^2=36
所以x^2+2xy+y^2-2xz-2yz+z^2 =36