# data[].attributes.body
Make sure you’ve completed the factorising lesson before coming here!

Arguably this is the easier of the two topics but we want to have a good understanding of factorising before we start this lesson.

# data[].attributes.body
Expanding brackets is the opposite to factorising. Instead of putting an expression in brackets, we are going to take it out, and we do this by expanding the brackets.

To do this, all we need to do is multiply the HCF on the outside of the bracket by each of the terms that are on the inside of the  bracket, including if the value is “1”.

The importance thing to consider here is the use of indices and knowing our times tables… or being able to correctly use your calculator to do this for you!