Question 44240
f(x) = (x^2-16)/(x^2-2x-8)
f(x) = ((x + 4)(x - 4))/((x - 4)(x + 2))
You can not divide by zero.
{{{x - 4 = 0}}} and {{{x + 2 = 0}}}
{{{x = 4}}} and {{{x = -2}}}