If one of the lines given by the equation `ax^(2)+6xy+by^(2)=0` bisects the angle between the co-ordinate axes, then value of `(a+b)` can be :

One of the lines given by the equation ax^2+2lamdaxy+by^2=0 will bisect the angle between the coordinate axes if

One of the lines represented by the equation ax^(2)+bxy+cy^(2)=0 bisects an angle between the co-ordinate axes

If one of the lines given by kx^(2)+xy-y^(2)=0 bisects the angle between the co-ordinate axes, then k=

If one of the two lines 3x^(2)-kxy-y^(2)=0 bisects an angle between the co-ordinates axes, then : k=

If one of the lines denoted by the line pair ax^(2)+2hxy+by^(2)=0 bisects the angle between the coordinate axes,then prove that (a+b)^(2)=4h^(2)

If one of the lines in the pair of straight lines given by 4x^(2)+6xy+ky^(2)=0 bisects the angle between the coordinate axes, then k in

If one of lines in ax^(2)+2hxy+by^(2)=0 bisects the angle between the coordinates axes then (a+b)^(2)=

If one of the lines kx^(2)+xy-y^(2)=0 bisects an angle between the co-ordinate then: k=