Example 1: x² + 5x + 6. To factor this kind of trinomial, the following steps may follow: 1. Factor the leading term of the trinomial and write these as the leading term of the factors. x² = (x)(x) 2. List down all the factors of the last term. (2)(3) = 6 (6)(1) = 6 3. Identify which factor pair sums up to the middle term; then 2+3=5 4. Write factor pairs as the last term of the binomial factors. (x + 2) (x + 3)​