$r_1 r_2 r_3 = -\frac{\text{constant term}}{\text{leading coeff}}$

$r_1 r_2 r_3 = \frac{\text{constant term}}{\text{leading coeff}}$

$r_1 r_2 r_3 = \text{leading coeff}$

$r_1 r_2 r_3 = -p^3$