JAMB Mathematics 2013 Objective — Question 12
Question 12 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2013 Objective paper, with the correct answer and a full explanation.
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If x−4 is a factor of x²−x−k, then k is:
- A. A. 20
- B. B. 2
- C. C. 4
- D. D. 12Correct
Explanation
f(4)=16−4−k=0 → k=12.
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