If `(1331)^(-x)=(225)^(y)` where `x` and `y` are integers, then find the value of `3xy`.

If (81)^(x)=(1)/((125)^(y)) and x,y are integers,then find the value of 12xy.

If (81)^(x)=1/((125)^(y)) and x, y are integers, then find the value of 12xy .

If (x-1)^2+(y-2)^2 = (x-1)(y-2) , where x and y are integers, then the value of 2x + 3y is

If (x-1)^2+(y-2)^2=0 , where x and y are integers, then the value of 2x+3y is :

If x-y= -1 , then find the value of x^3 - y^3 +3xy

If log_(10)(x^(3)+y^(3))-log_(10)(x^(2)+y^(2)-xy)<=2, where x,y are positive real number,then find the maximum value of xy.

If x=1, y=2 find the value of: xy+3y-9