WAEC Mathematics 2023 Objective — Question 9
Question 9 of 50 from the West African Examinations Council (WAEC) Mathematics 2023 Objective paper, with the correct answer and a full explanation.
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Find the roots of the quadratic equation 3m²-2m-65=0.
- A. (13/3, 5)
- B. (-13/3, -5)
- C. (-13/3, 5)Correct
- D. (13/3, -5)
Explanation
Using the quadratic formula with a=3,b=-2,c=-65: m=[2±√(4+780)]/6=[2±28]/6, giving m=5 or m=-13/3.
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