Answer:
x = -1 and x = 2 are non-permissible
Step-by-step explanation:
for rational equations, the denominator can't equal zero, so find the zeroes of the equation, those will be the non-permissible numbers...
take the denominator and set it equal to zero, then solve...
x² - x - 2 = 0
(x - 2)(x + 1) = 0
so
x - 2 = 0
x = 2
and
x + 1 = 0
x = -1
Either of these values make the denominator equal zero, so they are not part of the domain of the function (non-permissible numbers)
