Which is a common factor of 3x^2 - 12 and x^2 + 2x?

  1. x + 4
  2. x + 2
  3. 3x
  4. x - 2
Answer

B) x + 2

3x^2 - 12 = 3(x - 2)(x + 2) and x^2 + 2x = x(x + 2); both contain x + 2. SLO M-09-A-17 · Knowledge

Mathematics MCQ · More Factorization MCQs · Practise