Answer:A
Step-by-step explanation:
Answer:
1. (x+3)(x+1)
2. (m+4)(m+8)
3. (r-2)(r-1)
4. (x-5)(x-1)
5. (x-7)(x-3)
6. (x-11)(x-11)
7. (t-6)(t+2)
8. (p-8)(p-8)
9. (x-1)(x-9)
10. (x+5)(x+1)
11. (a+9)(a-1)
12. (y-8)(y+1)
13. (x-3)(x+1)
14. (y+13)(y+1)
15. (m+5)(m+4)
16. (x+10)(x+2)
17. (a-12)(a-2)
18. (y+9)(y+2)
19. xy(x+2+y) i think
20. ab(a-4+4b)
21. xy(x+6-7y)
The answer is 20/27. 8/9x5/6=20/27.
D-70
It is a combination C(8,4)
