import java.util.Scanner;

public class exerc4
{
	double a, b, c, x1, x2;
	Scanner ler = new Scanner(System.in);

	public exerc4()
	{
		System.out.println("Digite o valor de a");
		a=ler.nextDouble();
		System.out.println("Digite o valor de b");
		b=ler.nextDouble();
		System.out.println("Digite o valor de c");
		c=ler.nextDouble();
		x1=calc1(a,b,c);
		x2=calc2(a,b,c);
		System.out.println("O valor de x1 é "+x1+" e o valor de x2 é "+x2);
	}
	
	public double calc1 (double a, double b, double c)
	{
            double delta=(b*b)-(4*a*c);
            double res=(-b+(Math.sqrt(delta)))/(2*a);
            return res;
	}
	
	public double calc2 (double a, double b, double c)
	{
            double delta=(b*b)-(4*a*c);
            double res=(-b-(Math.sqrt(delta)))/(2*a);
            return res;
	}	
	
	public static void main(String[] args)
	{
		new exerc4();
	}
}