Equation

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

int main()
{
    float Fc,b,d,As,a,u,p;

    printf("Fc: ");
    scanf("%f",&Fc);
    printf("b: ");
    scanf("%f",&b);
    printf("d: ");
    scanf("%f",&d);
    printf("As: ");
    scanf("%f",&As);

    a = 0.85 * Fc * b * d;
    u = 600 * As;
    p = -600 * As * d;

    printf("The roots of your equation are:\n");
    printf("C1 = %f\n", (-u + sqrt((u*u) - (4 * a * p) )) / 2 * a );
    printf("C2 = %f\n", (-u - sqrt((u*u) - (4 * a * p) )) / 2 * a );
    return 0;
}