Hey there! Hello!
For this problem, you need to use the distributive property to expand the variables into one equation. In my attachment, I'll show you how to do this.
If you need to then factor out the equation back into two binomials, you could either do it the way I show you, or you could just factor out the GFC's of both binomials, 2 and 4, to get 8. Either way, it's good to know how to do these steps. If the "re-factoring" step isn't necessary for your question, the second line down in the lower portion of my work.
I hope this helped you out! Feel free to ask me any additional questions if you have any. :-)