已知实数x、y满足x2+4xy+4y2+x+2y-6=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______.
已知实数x,y满足x2+4xy+4y2-x-2y+14=0,则x+2y的值为 ___ .
实数x、y满足x2+y2=4,则x+y-xy的最大值为______.
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______.
已知实数x,y满足2x-y-5=0,则x2+y2的最小值为______.
已知实数x,y满足2x+y≥1,则u=x2+y2+4x-2y的最小值为______.
已知实数x、y满足x2 4xy 4y2 x 2y-6=0,求6/x 2y的值
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
已知正实数x,y满足xy+2x+y=4,则x+y的最小值为______.
若实数x,y满足3x2+2y2=6x,则x2+y2的最大值为______.
已知实数x,y满足x2+y2-2x+4y=0,则x2+y2的最小值是