若实数x、y满足(x2+y2+2)(x2+y2-1)=0,则x2+y2=______.
已知实数x、y满足(x2+y2)(x2+y2-1)=2,则x2+y2的值为______.
已知实数x.y满足(x2+y2)(x2+y2-1)=2,求x2+y2的值
若实数x,y满足3x2+2y2=6x,则x2+y2的最大值为______.
若实数x,y满足2x2+3y2=1,S=3x2-2y2,则S的取值范围是______.
实数x、y满足3x2+2y2=6x,则x2+y2的最大值为( )
已知x2+4x+y2-2y+5=0,则x2+y2=______.
已知:(x2+y2+1)2-4=0,则x2+y2=______.
已知x、y是实数且满足x2+xy+y2-2=0,设M=x2-xy+y2,则M的取值范围是______.
已知x,y为实数,且(x2 +y2)(x2 +y2+2)=3.求x2 +y2的值
已知实数x,y满足x2+y2-2x+4y=0,则x2+y2的最小值是
已知实数x,y满足x2+xy+y2=3,则x2-xy+y2的最小值
若实数x,y满足x2+4y2=4x,则S=x2+y2的取值范围是______.