WAEC Further Mathematics 2020 Question 38

Question 38

Polynomials

If the sum of the roots of 2x2 + 5mx + n = 0 is 5, find the value of m.

  1. A.−2.5
  2. B.−2.0
  3. C.2.0
  4. D.2.5
Show the answer and explanation

Answer: B (−2.0)

Explanation

Sum of roots = −5m/2 = 5, so m = −2.