WAEC Further Mathematics 2018 Question 11

Question 11

Polynomials

If α and β are the roots of the equation 2x2 − 5x + n = 0 such that αβ = 2, find the value of n.

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

Answer: D (4)

Explanation

αβ = n/2 = 2, so n = 4.