若x^2-6x+4y^2+4y+10=0则x^2+y^2=

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若x^2-6x+4y^2+4y+10=0则x^2+y^2=若x^2-6x+4y^2+4y+10=0则x^2+y^2=若x^2-6x+4y^2+4y+10=0则x^2+y^2=x^2-6x+4y^2+4

若x^2-6x+4y^2+4y+10=0则x^2+y^2=
若x^2-6x+4y^2+4y+10=0
则x^2+y^2=

若x^2-6x+4y^2+4y+10=0则x^2+y^2=
x^2-6x+4y^2+4y+10=0
左边=(x-3)^2+(2y+1)^2=0
所以x=3
y=-1/2
x^2+y^2=九又四分之一

x^2-6x+4y^2+4y+10=0
x^2-6x+9+4y^2+4y+1=0
（x-3）^2+(2y+1)^2=0
x-3=0,2y+1=0
x=3,y=-1/2
x^2+y^2=3^2+(-1/2)^2=9.25

原式等于
x^2-2*3*x+3^2+（2y）^2+2*2y*1+1＝0
＝》（x－3）^2+（2y+1）^2＝0
＝》x=3；y＝-0.5
所以x^2+y^2＝37/4

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