public static void Main()
Console.WriteLine("Write a nuber for x");
double x = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("y={0}",(4*Math.Pow(x,2))-12);
Console.WriteLine("y={0}",(Math.Pow(x,4))-273);
Console.WriteLine("Cant find y");
Console.WriteLine("y={o}",x+12);