The value k such that `3x^2 +11xy+10y^2 +7x+13y + k = 0` represents a pair of straight lines is

The value k such that 3x^2+11xy+10y^2+7x+13+k=0 represents a pair of straight lines is

The value of k such that 3x^(2)-11xy+10y^(2)-7x+13y+k=0 may represent a pair of straight lines , is

The value of k such that 3x^(2)-11xy+10y^(2)-7x+13y+k=0 may represent a pair of straight lines , is

The value of k such that 3x^(2) - 11xy + 10 y^(2) - 7x + 13 y+ k = 0 may represent a pair of straight lines is :

If x^(2)- 10xy + 4y^(2) + 6x + 2y + k = 0 represents a pair of straight lines then, k=

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

If 6x^2+11xy-10y^2+x+31y+k=0 represents a pair of straight lines, then k is equal to.