Question

The roots of the function f(x) = x2 – 2x – 3 are shown. What is the missing number?

x = –1 and x = ____

Answer 1

x = -1 and x = 3

Explanation:

x² – 2x – 3 = (x - 3) (x + 1) = 0

x = 3 or x = -1

Answer 2

The roots of the function f(x) = x2 – 2x – 3 are shown. What is the missing number?

x = –1 and x = 3

Explanation: