已知x、y满足x2+y2-x+2y+5\4=0,求x、y的值
已知x,y满足x2+y2-6x-2y+5=0,求x2+y2的最大值
已知实数x,y满足x2+y2-4x+1=0,求2x+y的取值范围?
已知实数x,y满足(x2)+(y2)-xy+2x-y+1=0,求x,y的值
已知实数x、y满足X2+y2-xy+2x-y+1=0,试求x、y的值
已知x2+4x+y2-2y+5=0,求x,y的值.
已知实数x,y满足x2+y2=4,求x+y的取值范围
已知实数x,y满足x2+y2-2x+2y=6求x2+y2的最值
正整数x,y满足x2-y2=2xy,求x-y/x+y的值
整数x,y满足x2-y2=2xy,求x-y/x+y的值
已知实数x,y满足x2+y2+4x+3=0,求(y-2)/(x-1)的值域.
已知实数x,y满足x2+3y2+6x-12y+21=0,求x,y的值
已知实数x、y满足x2+4y2=2x+4y-2,求x-2y的平方根.