The roots of the function f(x) = x^2 – 2x – 3 are shown. what is the missing number?
x = –1 and x =

If you would like to find the roots of the function f(x) = x^2 - 2 * x - 3, you can calculate this using the following steps:

f(x) = x^2 - 2 * x - 3 = (x - 3) * (x + 1)
1. x = - 1
2. x = 3

The missing number would be 3.