若x2-2x+y2+6y+10=0,则x-y=______.
已知x2+4x+y2-2y+5=0,则x2+y2=______.
若实数x,y满足3x2+2y2=6x,则x2+y2的最大值为______.
若x2-4x+y2+6y+13=0,则x=______,y=______.
已知x2+y2+z2-2x+4y-6z+14=0,则x+y+z=______.
若X2+Y2-2X-6Y+10=0 ,求(x2-y2)/xy的值
若实数x,y满足x2+y2-2x+4y=0,则x-2y的最大值为______.
若实数x、y满足x2+y2-2x+4y=0,则x-3y的最大值是______.
已知实数x、y满足x2+4xy+4y2+x+2y-6=0,则x+2y的值为______.
若|x+y-5|+(xy-6)2=0,则x2+y2的值为______.
圆x2+y2-2x+10y-24=0与圆x2+y2+2x+2y-8=0的交点坐标是______.
若(2x+y)(x-2y)=2x2-mxy-2y2,则m=______.
已知x+y=4,x2+y2=10,则(x-y)2=______.