Question

What is the midpoint of the x-intercepts of
f(x) = (x – 4)(x + 4)?

(0,0)
(0,4)
(–4,0)
(2,0)

Answer 1

The x-intercepts are at x = 4 and x = −4, i.e. (4,0) and (−4,0). Their midpoint is ((4 + (−4))/2, (0+0)/2) = (0,0).