UI Post-UTME Mathematics 2024 (Model questions) Question 18

Question 18

Algebraic Expressions

For what value of x is (x4 + 3x3 − 4x2 + 6)/(x − 5) undefined?

  1. A.15
  2. B.3
  3. C.5
  4. D.1/2
Show the answer and explanation

Answer: C (5)

Explanation

A fraction is undefined when its denominator is zero: x − 5 = 0, x = 5.