已知|x-y-根号3|+(x-2y²)=0,求2分之x+y²的值?

已知|x-y-根号3|+(x-2y²)=0,求2分之x+y²的值?
已知|x-y-根号3|+(x-2y²)=0,求2分之x+y²的值?

已知|x-y-根号3|+(x-2y²)=0,求2分之x+y²的值?
平方在外面吧
|x-y-根号3|+(x-2y)²=0
两项均为非负值,和为0,则两项均是0
∴x-y-√3=0且x-2y=0
∴x=2y代入x-y-√3=0
得y=√3,x=2√3
∴2分之x+y²
=√3+3