Answer:
Step-by-step explanation:
F(x) = x/ (x^2 + 4x - 21)
F(x)= x / (x - 3)(x + 7)
When x = 3 and x = -7 the denominator is zero so there are no values of the function corresponding to these values of x.
The domain is all Real x except x = -7 and x = 3.
The range is all values of f(x) except for those values when x = -7 and x = 3.
