" (xvii) "y^(2)-4y-1=0

The circles x^(2)+y^(2)-2x-4y+1=0 and x^(2)+y^(2)+4y-1 =0

Find the equation of line joining the center of the circles x^(2)+y^(2)-2x+4y+1=0 and 2x^(2)+2y^(2)-2y+4x+1=0

The length of the common chord of the circles x^(2)+y^(2)-2x-1=0 and x^(2)+y^(2)+4y-1=0 , is

The length of the common chord of the circles x^(2)+y^(2)-2x-1=0 and x^(2)+y^(2)+4y-1=0 , is

At what points on the curve x^(2)+y^(2)-2x-4y+1=0, the tangents are parallel to the y-a is?

Show that the line 3x-4y=1 touches the circle x^(2)+y^(2)-2x+4y+1=0 .

At what points on the curve x^(2)+y^(2)-2x-4y+1=0 , the tangents are parallel to the Y-axis ?

Find the lengths of the tangents drawn from the point. (-1,1) to the circle x^(2)+y^(2)-2x+4y+1=0

Find the transformed equation of x^(2)+y^(2)+2x-4y+1=0 when the origin is shifted to the point (-1, 2).