1) Cancel out the common factor which in this case is 8

2)First apply exponent rule
now cancel out the common factors which are n and n+7 leaving you with

3)Factorize
cancel out the common factor in this case x+2 leaving you with

4) Factorize
cancel out the common factor in this case 3w-1 leaving you with

5) In the picture
6)In the picture
I am REALLY tired sorry I wont be able to do the rest, I hope these are helpful :)