Question

Which point is an x intercept of the quadratic function f(x) =(x-8)(x+9)

Answer 1

(- 9, 0) and (8, 0)

Explanation:

To find the x- intercepts let f(x) = 0, that is

(x - 8)(x + 9) = 0

Equate each factor to zero and solve for x

x + 9 = 0 ⇒ x = - 9

x - 8 = 0 ⇒ x = 8

The x- intercepts are x = - 9 and x = 8