Factorise (x^2 + 3x + 2)(x^2 + 3x + 4) - 8.

  1. (x^2 + 3x + 6)^2
  2. (x^2 + 3x)(x^2 + 3x - 6)
  3. x(x + 3)(x^2 + 3x + 6)
  4. (x + 1)(x + 2)(x^2 + 3x)
Answer

C) x(x + 3)(x^2 + 3x + 6)

Let y = x^2 + 3x: (y + 2)(y + 4) - 8 = y^2 + 6y = y(y + 6) = x(x + 3)(x^2 + 3x + 6). SLO M-09-A-18 · Understanding

Mathematics MCQ · More Factorization MCQs · Practise