Find the linearization L(x,y,z) of the function f(x,y,z)=x+y2 +22 at the points (1,0,0), (4,4,0), and (1,2,2). The linearization of f(x,y,z) at (1,0,0) is L(x,y,z) = (Type an exact answer, using radicals as needed.) The linearization of f(x,y,z) at (4.4.0) is L(x,y,z)= (Type an exact answer, using radicals as needed.) The linearization of f(x,y,z) at (1,2,2) is L(x,y,z) = (Type an exact answer, using radicals as needed.)