Question

What are the zeros of the polynomial function: f(x) = x3 + 9x2 + 20x ?

Answer 1

\( \color{Black}{\Rightarrow 0 = x(x^2 + 9x + 20)}\)

\( \color{Black}{\Rightarrow 0 = x(x + 5)(x + 4)}\)

Answer 2

So they are 0, -5, -4 (:

Answer 3

Yep!