Question

Factorise the following expression by way of grouping

pm-pn+3qm-3qn please I will mark the best one

Answer 1

The answer is (p+3q)(m-n)

Step by step explanation:

First, you have to take out the like-terms :

`pm - pn + 3qm - 3qn`

`p(m - n) + 3q(m - n)`

Next you have to put p and 3q under one bracket :

`(p + 3q)(m - n)`

Answer 2

Explanation: