Factorise (x + 1)(x + 2)(x + 3)(x + 4) + 1.

  1. (x^2 + 5x + 5)^2
  2. (x^2 + 5x + 4)^2
  3. (x^2 + 5x + 6)^2
  4. (x + 5)^4
Answer

A) (x^2 + 5x + 5)^2

With y = x^2 + 5x: (y + 4)(y + 6) + 1 = y^2 + 10y + 25 = (y + 5)^2. SLO M-09-A-18 · Understanding

Mathematics MCQ · More Factorization MCQs · Practise