已知4x^2-4xy+y^2+|x+1|=0,求代数式(xy-x^2)/x^2-2xy+y^2/xy*x-y/x^2
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/09 06:35:34
![已知4x^2-4xy+y^2+|x+1|=0,求代数式(xy-x^2)/x^2-2xy+y^2/xy*x-y/x^2](/uploads/image/z/5242321-1-1.jpg?t=%E5%B7%B2%E7%9F%A54x%5E2-4xy%2By%5E2%2B%7Cx%2B1%7C%3D0%2C%E6%B1%82%E4%BB%A3%E6%95%B0%E5%BC%8F%EF%BC%88xy-x%5E2%EF%BC%89%2Fx%5E2-2xy%2By%5E2%2Fxy%2Ax-y%2Fx%5E2)
x){}KM*tM**+㌴k*
kl
tmlz{RN}b#bJ
JMR>5/0*ӄBEz6CE*?7VPVbMO[';ւ5 }t';z.YlF{u]K_z}#N<;h9ϧlY- Zn{ھ+V@T'
MOw,|g<_dW B
已知4x^2-4xy+y^2+|x+1|=0,求代数式(xy-x^2)/x^2-2xy+y^2/xy*x-y/x^2
已知4x^2-4xy+y^2+|x+1|=0,求代数式(xy-x^2)/x^2-2xy+y^2/xy*x-y/x^2
已知4x^2-4xy+y^2+|x+1|=0,求代数式(xy-x^2)/x^2-2xy+y^2/xy*x-y/x^2
4x^2-4xy+y^2+|x+1|=0
(2x-y)^2+|x+1|==0
只有
2x-y=0
x+1=0
解得x=-1,y=-2
代入(xy-x^2)/x^2-2xy+y^2/xy*x-y/x^2中
(式子不太明白,你可以自己代入)
由已知的式子可以得出X=-0.5,Y=-1。带入结果等于-6