Answer:
The other root is x = 3
Step-by-step explanation:
Factor out the equation
f(x) = x² – 2x – 3
f(x) = (x + 1)(x - 3)
Set the equation equal to 0
0 = (x + 1)(x - 3)
Separate the equations
0 = (x + 1) 0 = (x - 3)
- 1 - 1 + 3 + 3
-1 = x 3 = x
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