Процедуры функции.не знаю как решить.

int a=0,b=0,m,n;
long double U=0,stepenEXP=0;
long double x=0,y=0;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
    : TForm(Owner)
{
 
}
//---------------------------------------------------------------------------
void __fastcall TForm1::X(int m, int n)
{
    x=(m+1)/(pow(n,2)+sqrt(1+2*m));
}
void __fastcall TForm1::Y(int m, int n)
{
    y=(m+1)/(pow(n,4)+sqrt(1+2*pow(m,2)));
}
void __fastcall TForm1::Button1Click(TObject *Sender)
{
    a=StrToInt(Edit1->Text);
    b=StrToInt(Edit2->Text);
    Y(a-1,b-1);
    stepenEXP=y;
    X(a+2,b-1);
    Y(b-1,a+2);
    U=(exp(stepenEXP))/x*y;
}

class TForm1 : public TForm
{
__published:    // IDE-managed Components
    TEdit *Edit1;
    TEdit *Edit2;
    TButton *Button1;
    void __fastcall Button1Click(TObject *Sender);
private:    // User declarations
public:     // User declarations
    __fastcall TForm1(TComponent* Owner);
    void __fastcall X(int m, int n);
    void __fastcall Y(int m, int n);
};