The value of `h` for which `3x^2-2hxy + 4y^2 = 0 `represents a pair of coincident lines are

The set of value of h for which the equation 4x^(2)+hxy-3y^(2)=0 represents a pair of real and distinct lines is

The set of value of h for which the equation 4x^(2)+hxy-3y^(2)=0 represents a pair of real and distinct lines is

The value of h for which the equation 3x^2+2hxy-3y^2-40x+30y-75=0 represents a pair of straight lines , are

The value of h for which the equation 3x^2+2hxy-3y^2-40x+30y-75=0 represents a pair of straight lines , are

The equation ax^(2)+2hxy+ay^(2)=0 represents a pair of coincident lines through origin, if

The equation 4x^(2)+hxy+y^(2)=0 represents a pair of coincident lines through origin, if h=

The value of k for which 2x^(2) + 5xy + 3y^(2) + 3x + 4y + k = 0 represent pair of straight lines is

If the equation K(x^(2)+y^(2))=(3x-y)^(2) represents a pair of coincident lines, then k=