" Q.12Given that "x^(2)+y^(2)=14x+6y+6," find the largest possible value of the expression "E=3x+4y

if x^(2)+y^(2)-4x-6y-3=0, then minimum possible value of the expression 16[(1)/((x-2)^(2))+(1)/((y-3)^(2))] is equal to:

If x = 1 , y = 2 find the values of the following expressions: 4x- 6y +5

If x^(2)+y^(2)+6x-4y-12=0 then find the ragne of 2x+y

If x^(2)+y^(2)+6x-4y-12=0 then find the ragne of 2x+y

If x^(2)+y^(2)+6x-4y-12=0 then find the ragne of 2x+y

If x ^(2) + y^(2) - 14 x - 6y - 6=0, then the maximum possible value of 3x + 4y is (where (x,y) is a point on the given curve)

If x^2+y^2-4x-6y+13=0 , then find the value of (x+y):(y-x).

If 3x+2y=12 and x y=6 , find the value of 9x^2+4y^2

If 8x^2 + y^2 -12x -4xy+9 =0 , then the value of (14x-5y) is: