Answer:
x = - 3
Step-by-step explanation:
to find the zeros equate f(x) to zero , that is
(x + 3)(x - 7)(x + 5) = 0
equate each factor to zero and solve for x
x + 3 = 0 ⇒ x = - 3
x - 7 = 0 ⇒ x = 7
x + 5 = 0 ⇒ x = - 5
the zeros are x = - 3, x = 7, x = - 5
the one from the list is x = - 3
