WAEC Further Mathematics 2025 Question 8

Question 8

Polynomials

Find the reminder when f(x) = 2x3 − 4x2 + x − 7 is divided by (x + 1).

  1. A.−14
  2. B.−8
  3. C.8
  4. D.14
Show the answer and explanation

Answer: A (−14)

Explanation

By the remainder theorem the remainder is f(−1) = −2 − 4 − 1 − 7 = −14.