ok first
(2+h) 3
=(h+2) 3
=(h+2)(h+2)(h+2)
=(h+2) (h 2+4h+4)
= h 3 +4h 2 + 4h + 2h 2 + 8h + 8
= h 3 +6h 2 + 12h + 8
This is not the whole question of course,hopefully you can so the rest of the simplifying yourself
I am actually wondering if the question is copied correctly, you have =1 are you sure it is not =0 ?
+4 
+118654 
