[" The equation "],[2x^(2)+3y^(2)-8x-18y+35=k],[" represents "]

Equation x^(2) + y^(2) - 8x + 6y + 25 = 0 represents

If the equation k^(2)x^(2)+10xy+3y^(2)-15x-21y+18=0 represents a pair of mutually perpendicular lines then

The equation 12x^(2)+7xy-12y^(2)-18x+y+6=0 represents

The equation (x^(2))/(12-k) +(y^(2))/( 8-k) =1 represents

If the equation 2x^(2)+7xy+3y^(2)-9x-7y+k=0 represents a pair of lines, then k is equal to

If the equation 2x^(2)+7xy+3y^(2)-9x-7y+k=0 represents a pair of lines, then k is equal to

If the equation 2x^(2)+kxy-3y^(2)-x-4y-1=0 represents a pair of lines then the value of ' 'k' can be:

The value of k ,such that the equation, 2x^(2)+2y^(2)-6x+8y+k=0 represents a point circle,is

Show that the equation 3x^(2)+3y^(2)+12x-18y-11=0 represent a circle.Also find its centre and radius.