已知实数x,y满足√x-8+|x-2y+2|=0 ,求2x-4/5y的平方根

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：y 已知实数x,y满足约束条件x+y>3,y 已知实数x.y满足根号(x+y-8)+根号(8-x-y)=根号(3x-y-4)+根号(x-2y+7),求x,y 已知实数x,y满足y=√x-8+√16-2x+1/2,求xy的平方根 已知实数x、y满足√x-2y-3+（2x-3y-5）=0求x-8y的平方根和立方根. 已知实数x,y满足 y=√x^2-4+√4-x^2分之x-2 +3 ,求9x+8y的值. 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