" Q."18[" By translating the axes the equation "],[xyX+2y=6" has changed to "xy=c," then "c=]

By translating the axes the equation xy-x+2y=6 has changed to xy=c, then c =

By translating the axes the equation xy-2x-3y-4=0 has changed to XY=k, then k=

By translation of axes the equation xy - x + 2y - 6 = 0 changed as xy = c then c =

By translation of axes the equation xy-x+2y-6=0 changed as XY=c then c=

If 2a+3b+6c =0 then the equation ax ^2 + bx +c=0 has atlest one root in

If the curve C in the xy plane has the equation x^(2)+xy+y^(2)=1, then the fourth power of the gretest distance of a point on C from the origin is "_____."

If the curve C in the xy plane has the equation x^(2)+xy+y^(2)=1, then the fourth power of the greatest distance of a point on C from the origin is

If 2a+3b+6c=0 then the equation ax^2+bx+c=0 has in the interval (0,1)

The angle of rotation of axes to remove xy term of the equation xy = c^(2) is

The angle of rotation of axes to remove xy term in the equation xy = c^(2) is