若实数x,y满足x2+y2+x2y2-4xy+1=0,则(x+y)2的值为
若实数XY满足X2+Y2=1,则X-2Y的最大值为
已知实数x,y满足x2+y2=2x,则x2y2的取值范围是______.
已知实数x,y满足x2+4xy+4y2-x-2y+14=0,则x+2y的值为 ___ .
已知实数x、y满足x2+4xy+4y2+x+2y-6=0,则x+2y的值为______.
实数xy满足x2+y2+2x-4y+1=0,则x2+y2-2x+1的最小值为
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+4y2+x2y2-6xy+1=0,求 x4-y4/2x-y 乘 2xy-y2/xy-y2 除以(x2+y2/x
若实数x,y满足X2+y2-2X+4y=0,则x-2y的最大值为?
已知x,y为实数,x2y2+x2+4xy+13=6x,求x,y的值
已知x,y满足等式2x+x2+x2y2+2=2xy,那么x+y的值为( )
若实数x,y满足|xy|=1,则x2+4y2的最小值为______.