Answer:

Step-by-step explanation:
Use FOIL: <em>(a + b)(c + d) = ac + ad + bc + bd</em>

4 is probably the answer. Hope this helps. :)
Answer:yes they do
Step-by-step explanation:
Answer:
its i think the first one and the last one
Step-by-step explanation:
sorry if its wrong but i think it is right