Equation `ax^3-9x^2y-xy^2+4y^3=0` represents three straight lines. If the two of the lines are perpendicular , then a is equal to

The equation x^(3)+ax^(2)y+bxy^(2)+y^(3)=0 represents three straight lines, two of which are perpendicular, then the equation of the third line, is

The equation x^(3)+ax^(2)y+bxy^(2)+y^(3)=0 represents three straight lines, two of which are perpendicular, then the equation of the third line, is

If the equation 4y^(3) - 8a^(2)yx^(2) - 3ay^(2)x +8x^(3) = 0 represents three straight lines, two of them are perpendicular, then sum of all possible values of a is equal to

If the equation 4y^(3) - 8a^(2)yx^(2) - 3ay^(2)x +8x^(3) = 0 represents three straight lines, two of them are perpendicular, then sum of all possible values of a is equal to

If the equation 4y^(3) - 8a^(2)yx^(2) - 3ay^(2)x +8x^(3) = 0 represents three straight lines, two of them are perpendicular, then sum of all possible values of a is equal to

If the equation 4y^(3) - 8a^(2)yx^(2) - 3ay^(2)x +8x^(3) = 0 represents three straight lines, two of them are perpendicular, then sum of all possible values of a is equal to

The equation x^(3)+x^(2)y-xy=y^(3) represents three real straight lines lines in which two of them are perpendicular to each other lines in which two of them are coincident none of these

The equation x^3+x^2y-x y=y^3 represents three real straight lines lines in which two of them are perpendicular to each other lines in which two of them are coincident none of these

If the equation x^(3)+ax^(2)y+bxy^(2)+y^(3)=0 represents three lines two of which are perpendicular then equation of third line is