`x^2-x y+y^2-4x-4y+16=0` represents a. a point b. a circle c. a pair of straight line d. none of these

The equation x^(2)+y^(2)+2x-4y+5=0 represents a.a point b.a pair of straight lines c.a circle of non zero radius d.none of these

The equation x^(2)y^(2)-9y^(2)-6x^(2)y+54y=0 represents (a)a pair of straight lines and a circle (b)a pair of straight lines and a parabola (c)a set tof four straight lines forming a square (d)none of these

If the equation 2x^(2)+2hxy +6y^(2) - 4x +5y -6 = 0 represents a pair of straight lines, then the length of intercept on the x-axis cut by the lines is equal to

If the equation 2x^(2)+2hxy+6y^(2)-4x+5y-6=0 represents a pair of straight lines,then the length of intercept on the x-axis cut by the lines is equal to

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

The equation of second degree x^(2)+2sqrt(2)x+2y^(2)+4x+4sqrt(2)y+1=0 represents a pair of straight lines.The distance between them is a.4 b.(4)/(sqrt(3)) c.2 d.2sqrt(3)

Findthe angle between the pair of straight lines x^2 -4y^2+3x - 4 = 0

The equation sqrt(x^2 + 4y^2 - 4xy+4) +x-2y=1 represent a (A) straight line (B) circle (C) parabola (D) pair of lines

The equation 16x^(4)-y^(4)=0 represents a pair of straight lines