Which of the following linear factors is a factor of the polynomial ?
Answer
(x-2)
The correct answer is (x-2) — The other options do not give zero when substituted, confirming as the correct factor.
Step-by-step solution
- Use the factor theorem: a linear factor is a factor if .
- Evaluate .
- Since , the factor divides the polynomial exactly.
- The other options do not give zero when substituted, confirming as the correct factor.
Common mistake: Evaluating the polynomial incorrectly at the trial values.
Concept tested: Factor theorem
Published · How this solution was prepared and checked
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