Answer:
The zero's of the function are [tex]-5,-4,0[/tex]
Step-by-step explanation:
we know that
The zero's of the function are the values of x when the value of the function is equal to zero
In this problem we have
[tex]f(x) = x^{3}+ 9x^{2}+ 20x[/tex]
using a graphing tool
see the attached figure
The zero's of the function are
[tex]-5,-4,0[/tex]
