To factorise x^2+7x+12 we need two numbers whose sum is 7 and product is 12. They are:

  1. -3 and -4
  2. 2 and 5
  3. 1 and 12
  4. 3 and 4
Answer

D) 3 and 4

3 + 4 = 7 and 3 4 = 12, so x^2+7x+12 = (x+3)(x+4). SLO M-09-A-17 · Knowledge

Mathematics MCQ · More Factorization MCQs · Practise