1. This is a product of 2 squares .
2. Multiply out the brackets and add the 8. Then factorise:
Hope this helps.
Considering that you seem to be focusing on difference of squares, sum and difference of cubes, the intention is probably, for #2, that you recognize that is a difference of cubes and use that formula (where ). You can do it the other way - multiply it all out - as well.