program Task3;
var x: real;

function power(a, b:real):real;
begin
 power:=exp(b * ln(a));
end;

function y(n:real):real;
var ch,zn: real;
begin
 ch:=power(n,3)+9*n+12;
 zn:=sqr(n)-6*n+15;
 if zn<>0 then
  y:= ch/zn
 else
  writeln('Error!');
end;

begin
 writeln('Type x:');
 readln(x);
 writeln('y(x)=', y(x):0:2);
end.