" (iv) "2y^(2)+y^(2)-2y-1

Factorise : - 2y^(3)+y^(2)-2y-1

2y ^ (3) + y ^ (2) -2y-1

(xdy) / (x ^ (2) + y ^ (2)) = ((y) / (x ^ (2) + y ^ (2)) - 1) dx

The radical axis of the circles x^(2)+y^(2)+2gx+c=0 and 2x^(2)+2y^(2)+3x+2y+2c=0 touches the circle x^(2)+y^(2)+y^(2)+2x+2y+1=0 if

Orthocentre of the triangle formed by the lines x+y+1=0 and 2 x^(2)-x y-y^(2)+x+2 y-1=0 is

The value of 'k' for which the set {(x,y)|x^(2)+y^(2)-2x-2y+1 =0} contains only one point in common is