Find the extremum of f(x,y) subject to the given constraint, and state whether it is a maximum or a minimum. f(x,y) = 3x + 2y - 4xy; x+ y=27 . . . Find the Lagrange function F(x,y,). F(x,y,2) = - 2 Find the partial derivatives FX, Fy, and Fx. FRE There is a value of located at (x, y) = (Type an integer or a fraction. Type an ordered pair, using integers or fractions.)