Answer:
The rational function has a point of discontinuity at any value of x that makes the denominator equal to zero, as division by zero is undefined.
To find such values, we need to solve the equation x^2 + 4x - 5 = 0 for x:
x^2 + 4x - 5 = 0
(x + 5)(x - 1) = 0
x = -5 or x = 1
Therefore, the rational function has points of discontinuity at x = -5 and x = 1.