I really need help with these 2 problems for math number 1 and 5 and if you can 6 as well

I Really Need Help With These 2 Problems For Math Number 1 And 5 And If You Can 6 As Well class=

Answer :

Answer:

Step-by-step explanation:

1. not factorable

5. not factorable

6. -(6n^4 + 2n -1)