When you say "which," it sounds like it should be multiple choice. Anyways, here's the simplified form of


(When simplifying fractions, you should <em>never</em> have a square root on the bottom. Multiply by the square root to cancel it out)
Answer:
4
Step-by-step explanation:
Did you mean -10? If so that is -1 and 10. 10 and 9 is not possible to answer.
-1+10=9
-1*10=-10
Answer:
3
Step-by-step explanation:
I think all the digits added together is 84 if I counted right which can be divided by 12 so the number can be divided by 3