已知实数x,y满足关系:x^2+y^2-2x+4y-20=0,则x^2+y^2的最小值是?

已知实数X,Y满足2 已知实数xy满足x+2y 已知实数xy满足 x+y-2 已知实数x.y满足(x+2)^2+y^2( 已知实数x,y满足x-y 已知实数X,Y满足{|x+y| 已知实数x,y满足关系:x^2+y^2-2x+4y-20=0,则x^2+y^2的最小值是? 已知实数x,y满足关系：x²＋y²-2x+4y-20=0,则x²＋y²的最小值为多少? 已知实数x,y满足关系x²+y²-2x+4y-20=0,则x²+y²的最小值 已知实数x,y满足不等式组：2x-y=0,x+2y 已知实数x,y满足约束条件:x>=2 y>=2 x+y 已知实数x,y满足x+y>=2,x-y 已知实数X,Y满足X+Y>=2,X-Y 已知实数x,y满足y=|x-1|,则x+2y的最大值是 已知实数x,y满足x+y>=2,x-y 已知实数x,y满足y=|x-1|若x+2y 已知实数x,y满足：y 已知实数x,y满足x-ay-1>=0,2x+y>=0,x