53. Given that f(x) = x2 - 4 and g(x) = x + 3, what are all the values of x for which f[g(x)] = 0 ?

Answer and Explanation

Your Answer is

Correct Answer is A

Explanation

f(g(x)) = (x+3)² -4 = x² + 6x + 5 = (x+5)(x+1) = 0

x1 = -1 , x2 = -5