Final answer:
The expression 2ab + 3b is factorised by identifying the common factor, which is 'b'. Factoring 'b' out results in the factored form b(2a + 3).
Step-by-step explanation:
To factorise the expression 2ab + 3b, we need to find the common factor in both terms. Here, the common factor is b. We factor out b from both terms to get the factored form.
Step 1: Identify the common factor. Both terms have b as a factor.
Step 2: Factor out b:
So, the factored form of 2ab + 3b is b(2a + 3).