Answer: C. x-2
Step-by-step explanation:
We have the following expression:

Factoring in the numerator:

Factoring again in the numerator with common factor
:

Simplifying:

Hence, the correct option is C. x-2
I believe the 4th one
an=145+an-1 and a1=20
6 times 2 is 12. B is than answer
To answer this multiply 3×7=21 and add 21+10=31. so it is 31/10 divided by 2. for that you do this...( top pic)