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WAEC Mathematics 2024 Question 50

Question 50

Algebraic Expressions

For what values of y is (y + 2)/(8y2 − 10y + 3) not defined

  1. A.−3/4, −1/2
  2. B.−3/4, 1/2
  3. C.3/4, −1/2
  4. D.3/4, 1/2
Show the answer and explanation

Answer: D (3/4, 1/2)

Explanation

The fraction is undefined when 8y² − 10y + 3 = (4y − 3)(2y − 1) = 0, i.e. y = 3/4 or 1/2.