How do you factorise this

pq + p - 3q - 3

(p - 3) (q + 1)

Step-by-step explanation:

Rearrange the terms in the expression as

pq - 3q + p - 3 (factor the first/second and third/fourth terms)

= q (p - 3) + 1 (p - 3) ← factor out (p - 3) from each term

= (p - 3) (q + 1) ← in factored form