已知实数x,y满足方程(x2+2x+3)(3y2+2y+1)=43,则x+y= ___ .
已知实数x,y满足方程(x2+2x+3)(3y2+2y+1)=43,则x+y= ___ .
已知实数x,y 满足x2+y2+2x-2√3y=0求:
已知实数x、y满足2x2-7xy+3y2=0,求x:y
已知实数x.y满足(x2+y2)(x2+y2-1)=2,求x2+y2的值
设实数x、y满足方程2x2+3y2=4x,则x+y的最小值为
已知实数x,y 满足x2+y2+2x=0则x+y得最小值
实数x、y满足3x2+2y2=6x,则x2+y2的最大值为( )
已知正实数x,y满足x2+y2+xy=1,则x+y的最大值是___.
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+4xy+4y2-x-2y+14=0,则x+2y的值为 ___ .
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=1,求y+2x+1