" Equation "sqrt((x-2)^(2)+y^(2))+sqrt((x+2)^(2)+y^(2))=4" represents "

Equation sqrt((x-5)^(2)+y^(2))+sqrt((x+5)^(2)+y^(2))=20 represents

The equation sqrt((x-4)^(2)+y^(2))+sqrt((x+4)^(2)+y^(2))=6 represents

The equation sqrt([(x-2)^(2)+y^(2)])+ sqrt([(x+2)^(2)+y^(2)])=4

The equation sqrt((x-4)^(2)+(y-2)^(2))+sqrt((x+4)^(2)+(y-2)^(2))=8 represents a

The locus of a point P(x, y) satisfying the equation sqrt((x -2)^(2) + y^(2)) + sqrt( (x + 2)^(2) + y^(2)) = 4 , is

The equation sqrt((x-4)^2+(y-2)^2)+sqrt((x+4)^2+(y-2)^2)=8 represents a

The equation sqrt((x-4)^2+(y-2)^2)+sqrt((x+4)^2+(y-2)^2)=8 represents a

The equation | sqrt( (x- 2) ^(2) + (y-1) ^(2)) - sqrt( (x+ 2)^(2) +y^(2)) =c will represent a hyperbola if

If the equation |sqrt((x - 1)^(2) + y^(2) ) - sqrt((x + 1)^(2) + y^(2))| = k represents a hyperbola , then k belongs to the set