WAEC Mathematics 2019 Objective — Question 21

Question 21 of 145 from the West African Examinations Council (WAEC) Mathematics 2019 Objective paper, with the correct answer and a full explanation.

21. Which of these values would make (3p−1)/(p²−p) undefined?

A. 1Correct
B. 1/3
C. -1/3
D. -1

Explanation

An expression is undefined when its denominator is zero: p²−p=0 ⇒ p(p−1)=0 ⇒ p=0 or p=1. So p=1 makes it undefined.

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