The range of 'a' so that `a^2x^2 + 2xy + 4y^2 = 0` represents distinct lines

a^(2)x^(2)+2xy+9y^(2)=0 represent a pair of distinct lines then 'a' lies in

a(x^(2)-y^(2))+xy=0 represents a pair of straight lines for

a(x^(2)-y^(2))+xy=0 represents a pair of straight lines for

The value of k, so that the equation -2x^(2)+xy+y^(2)-5x+y+k=0 may represent straight line is

Show that the equation 2x^(2) + xy - y^(2) + x + 4y - 3 = 0 represents a pair of lines.

If the equation kx^(2) – 2xy - y^(2)– 2x + 2y = 0 represents a pair of lines, then k =

Find lambda so that x^(2) + 5xy + 4y^(2) + 3x + 2y + lambda = 0 may represent a pair of straight lines. Find also the angle between them for this value of a lambda

If 2x^(2)+xy-3y^(2)+4x+ky-6=0 represents a pair of lines then k=

If the lines represented by ax^(2)+4xy+4y^(2)=0 are real distinct, then