4y^(2)-12y+9

Factories: 9y^(2) - 12y +4

If 4x^(2) + 12xy -8x+9y^(2) -12y = (ax+by) (ax+by-4) , then the value of a^(2) +b^(2) is

Factorise the using the identity a ^(2) - 2 ab + b ^(2) = (a -b) ^(2). 4y ^(2) - 12 y + 9

The circle 4x^(2)+4y^(2)-12x-12y+9=0

The circle 4x^(2)+4y^(2)-12x-12y+9=0

Show that the circle 4x^(2)+4y^(2)-12x-12y+9=0 touches both the coordinate axes.

If circles x^(2) + y^(2) - 3x + ky - 5 = 0 " and " 4x^(2) + 4y^(2) - 12x- y - 9 = 0 are concentric , then k =

If the two circle x^(2) + y^(2) - 3x + ky - 5 = 0 and 4x^(2) + 4y^(2) - 12x - y - 9 = 0 are concentric , then : k =

9y^(2)-12y+2=0