[sahal_sf]

دا حل السؤال الخامس

double a,b,c,r1;
        Scanner S = new Scanner (System.in);
        
     a=   S.nextDouble();
     b=   S.nextDouble();
     c=   S.nextDouble();
     
        r1 = (-1*b + Math.sqrt(b*b - 4*c) / 2);
        System.out.println(r1);