Answer:
Number 1 I think sorry if I am incorrect.
Answer:
The greatest common factor is 21,
Step-by-step explanation:
Find the prime factors of each term in order to find the greatest common factor (GCF).
Sorry this is a tricky one IDK I'll ask some others to help you
Answer:
-1
Step-by-step explanation:
Answer: IDK hope you get a good grade :0 SORRY
Step-by-step explanation: