Answer:
x- intercepts are - 8 and 2
Explanation:
to find the x- intercepts , let f(x) = 0 , that is
x² + 6x - 16 = 0 ← in standard form
(x + 8)(x - 2) = 0 ← in factored form
equate each factor to zero and solve for x
x + 8 = 0 ⇒ x = - 8
x - 2 = 0 ⇒ x = 2
the x- intercepts are - 8 and 2