task2

#include <stdio.h>
#include <math.h>

int main()
{
    float a, b, c, D, x1, x2;
    printf("a = ");
    scanf("%f",&a);
    printf("b = ");
    scanf("%f", &b);
    printf("c = ");
    scanf("%f", &c);
    D = b*b - 4*a*c;
    if(fabs(D) < 0.001)
    {
        x1 = x2 = -b/(2*a);
        printf("x1 = x2 = %.2f\n", x1);
    }
    else if(D>0)
    {
        x1 = (-b + sqrt(D)) / (2*a);
        x2 = (-b - sqrt(D)) / (2*a);
        printf("x1 =  %.2f\nx2 = %.2f\n", x1, x2);
    }
    else
    {
        printf("No real roots");
    }
    return 0;
}