For which values of k is x^2 + kx + 16 a perfect square?

  1. k = pm 10
  2. k = pm 4
  3. k = pm 8
  4. k = 16
Answer

C) k = pm 8

(x pm 4)^2 = x^2 pm 8x + 16, so k = pm 8. SLO M-09-A-20 · Understanding

Mathematics MCQ · More Factorization MCQs · Practise