WAEC Mathematics 2023 Objective — Question 48
Question 48 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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The truth set of 8+2x-x²=0 is {p,q}. Evaluate p+q.
- A. -6
- B. -2
- C. 2Correct
- D. -6
Explanation
8+2x-x²=0 → x²-2x-8=0 → (x-4)(x+2)=0 → x=4 or x=-2. p+q=4+(-2)=2.
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