If the equation `3x^(2)-2y^(2)+lamda xy -x+5y-2=0` represents a pair of straight lines then `lamda=`

Prove that the equation 2x^(2)+xy-6y^(2)+7y-2=0 represents a pair of straight lines.

If the equation x^(2)-y^(2)-x-lamday-2=0 represents a pair of lines then lamda=

If the equation 12x^(2)-10xy+2y^(2)+11x-5y+lambda=0 represents a pair of straight lines then the value of 221 lambda^(2)+361 lambda+582 is equal to

If the equation 3x^(2)+xy-y^(2)-3x+6y+k=0 represents a pair of straight lines, then the value of k, is

If the equation 3x^(2)+xy-y^(2)-3x+6y+k=0 represents a pair of straight lines, then the value of k, is

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