Factor the expression using the gcf
2+8

2 goes into both so when divided you would get 2(1+4)

You would get 1+4 because two goes into both numbers. for example:

2 divided by 2= 1 // which gives you the first number. (1)+4

8 divided by 2=4// which gives you the second number. 1+ (4)

hope this helped you!