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WAEC Mathematics 2005 Question 44

Question 44

Algebraic Expressions

For what values of y is the expression (6y − 1)/(y2 − y − 6) not defined?

  1. A.1/6, 1/4
  2. B.3, −2
  3. C.−3, 2
  4. D.0, 1
Show the answer and explanation

Answer: B (3, −2)

Explanation

The denominator y2 − y − 6 = (y − 3)(y + 2) is zero when y = 3 or −2.