The combined equation of pair of lines passing through origin and perpendicular to the lines given by `5x^(2)+3xy-2y^(2)=0` is

The combined equation of pair of lines passing through origin and perpendicular to the lines given by 2x^(2)-3xy+y^(2)=0 is

The combined equation of pair of lines passing through origin and perpendicular to the lines given by 2x^(2)-3xy+y^(2)=0 is

The equation of the pair of lines passing through the origin and perpendicular to the pair 10 x^(2)+4 x y-2 y^(2)=0 is

The combined equation of the pair of lines through the origin and perpendicular to the pair of lines given by ax^(2)+2hxy+by^(2)=0 , is

The combined equation of the pair of lines through the origin and perpendicular to the pair of lines given by ax^(2)+2hxy+by^(2)=0 , is

The combined equation of the pair of lines through the origin and perpendicular to the pair of lines given by ax^(2)+2hxy+by^(2)=0 , is

The joint equation of pair of lines through point (1, 2) and perpendicular to the lines given by 2x^(2)-5xy+3y^(2)=0 is