WAEC Mathematics 2025 Objective — Question 21
Question 21 of 51 from the West African Examinations Council (WAEC) Mathematics 2025 Objective paper, with the correct answer and a full explanation.
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The expression (5x+3)/[6x(x+1)] will be undefined when x equals
- A. {0,1}
- B. {0,-1}Correct
- C. {-3,-1}
- D. {-3,0}
Explanation
The expression is undefined when the denominator equals zero: 6x(x+1)=0, giving x=0 or x=-1, i.e. {0,-1}.
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