Question

If f(x)=x^2-9/x+3 is continuous at x=-3, find f(-3).

A. 3
B. -3
C. -6
D. 6

Answer 1

x = 3

Explanation:

x^2 - 9 = (x+3)(x-3)

[(x + 3)*(x -3] /x+3) = x-3

x - 3 = 0

x = 3