1036 - Fórmula de Bhaskara

import java.util.Scanner;
import java.lang.Math;

class Main {
  public static void main(String[] args) {
    Scanner entrada = new Scanner(System.in);
    double a , b , c , delta , r1 , r2, raizDelta, potenciaB;

    a = entrada.nextDouble();
    b = entrada.nextDouble();
    c = entrada.nextDouble();
    
    if(a == 0.0){
      System.out.println("Impossivel calcular");
    }
    else{
      potenciaB = Math.pow(b,2);
      delta = potenciaB - 4*a*c;

      if(delta < 0.0){
      System.out.println("Impossivel calcular");
      }
      else{
        raizDelta = Math.sqrt(delta);
        r1 = (-b + raizDelta )/(2*a);
        r2 = (-b - raizDelta)/(2*a);

        System.out.printf("R1 = %.5f\n",r1);
        System.out.printf("R2 = %.5f\n",r2);
      }
    }
    
    entrada.close();
  }
}