B. Factor completely 11. 1-a ? 25 12 pe - 13. r2-p? 16 31 14. 169 15. a? - 4b 16. 36x'yi - 492
![B Factor Completely 11 1a 25 12 Pe 13 R2p 16 31 14 169 15 A 4b 16 36xyi 492 class=](https://ph-static.z-dn.net/files/d76/9a67e836daf446a94c044a291dd063af.jpg)
Answer:
11. (1-a)(1+a)
12.
13. (r-p)(r+p)
14.
15. (a-2b)(a+2b)