# What are the zeros of the polynomial function: f(x) = (x – 3)(x + 1)(x + 5)?

The zeros $r$ are the values for which
$f \left(r\right) = 0 \implies \left(r - 3\right) \cdot \left(r + 1\right) \cdot \left(r + 5\right) = 0 \implies {r}_{1} = 3 , {r}_{2} = - 1 , {r}_{3} = - 5$