If `x^2 + ay^2 + 4xy + (2b +1) x + 30y + 50 = 0` represents a pair of parallel straight lines & distance between them is 'd' then-

The equation of second degree x^2 + 2sqrt2 xy + 2y^2 + 4x + 4 sqrt2 y + 1 = 0 represents a pair of straight lines, the distance between them is :

Show that 9x^2+24xy+16y^2+21x + 28y+ 6 =0 represents a pair of parallel straight lines and find the distance between them .

The equation 8x^(2)+8xy+2y^(2)+26x+13y+15=0 represents a pair of parallel st lines the distance between them is :

If 16x^(2)+24xy+9y^(2)+kx-12y-21=0 represents a pair of parallel lines then distance between them is

The equation 8x^2+8xy+2y^2+26x+13y+15=0 represents a pair of straight lines. The distance between them is

The equation 8x^2 +8xy +2y^2+26x +13y+15=0 represents a pair of straight lines. The distance between them is

The equation 8x^(2)+8xy+2y^(2)+26x+13y+15=0 represents a pair of straight lines.The distance between them is