已知x,y满足x^2+y^2-2x-y+5/4=0,求代数式xy(x+y)的值

已知实数x.y满足(x+2)^2+y^2( 已知圆x,y满足x^2+y^2 已知x,y满足x+y-2>=0,2x-y+2>=0,x 已知x,y满足约束条件：x-y+1>=0,x+y-2>=0,x 已知x.y满足X2-y2=2xy.则x-y/x+y=?x. 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 已知正整数x,y满足2^x+49=y^2,则x=,y=? 已知实数x,y满足x+y>=2,x-y 已知x,y 满足约束条件y>=2|x|,x+y-1 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 已知正整数x,y满足：xy-x-y=0,则x+2y的最小值 已知实数x,y满足x+y>=2,x-y 已知正数x,y满足2x+8y-xy=0,x+y的最小值