public override float execute() { return(_op.execute()); }
public override float execute() { return(_op1.execute() + _op2.execute()); }
public override float execute() { return((float)Math.Pow(_op1.execute(), _op2.execute())); }
public override float execute() { return(_op.execute()); }
public override float execute() { return(_op1.execute() + _op2.execute()); }
public override float execute() { return((float)Math.Pow(_op1.execute(), _op2.execute())); }