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:2024/06/20 17:36:21
![已知x/2+y/2-z/2=3,求x^2+2xy+y^2-2xz-2yz+z^2](/uploads/image/z/14440123-19-3.jpg?t=%E5%B7%B2%E7%9F%A5x%2F2%2By%2F2-z%2F2%3D3%2C%E6%B1%82x%5E2%2B2xy%2By%5E2-2xz-2yz%2Bz%5E2)
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