若丨2x+y-1丨+(x-2y)²=0,则x²+xy+y²的值为

来源:学生作业帮助网 编辑:作业帮 时间:2024/12/01 10:39:06
若丨2x+y-1丨+(x-2y)²=0,则x²+xy+y²的值为
x){ѽɎFڕ@=Ft)

若丨2x+y-1丨+(x-2y)²=0,则x²+xy+y²的值为
若丨2x+y-1丨+(x-2y)²=0,则x²+xy+y²的值为

若丨2x+y-1丨+(x-2y)²=0,则x²+xy+y²的值为
丨2x+y-1丨+(x-2y)²=0,
则2x+y-1=0且x-2y=0
解得x=0.4,y=0.2
x²+xy+y²
=0.4²+0.08+0.2²
=0.28