In the context I will be using, this is going to be seen as one term, as everything is connected through multiplication. Everything after the that follows constitutes the second term.

Look for common factors to both terms of the expression. I've highlighted some below:

Both terms in red are multiples of - the latter is

So we can take this out as a factor:

And then we just need to divide each term by once - almost everything stays the same, and we have:

as the only terms that have changed are the terms in red.

We can then look for another common factor - and indeed there is one.

We can take out a factor of as this is the highest power of that is common to both terms.

And again, we divide through each term by the common factor once.

Notice that the last term still has remaining, because it was initially to the power 3 and only the second power was common to both terms.

Now it's a case of simplifying what's left in the square brackets - hopefully you'll be okay with that.