[" Find the joint equation of the pair of lines which biscet angle between the lines given by "],[x^(2)+3xy+2y^(2)=0]

The joint equation of pair of lines which bisects angle between the lines given by x^(2)+3xy+y^(2)=0 is

The joint equation of lines which bisect the angle between the two lines x^(2)+3xy+2y^(2)=0 is

If 7x^(2)-kxy-7y^(2)=0 represents the joint equation of the bisectors of the angles between the lines given by 2x^(2)-7xy+4y^(2)=0 , then k=

The joint equation of bisectors of the angles between the lines given by 5x^(2)+6xy-y^(2)=0 , is

Find the joint equation of the pair of lines through the origin which are perpendicular to the lines given by 5x^(2) + 2xy - 3y^(2) = 0.

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