Express into the fractions with common denominator (11-20): a a у а 11. 11 12.*, 13. 2x By 3m 2n 14. b a - b'a+b bc ac pq pr 15. a x ya a-2ab' a + 2b 3 2 16. a? - 4' a(a + 2) 17. b a² - 9²a+3 a b с 18. a b 19. с a+b a-b' a-c a - b' a+b' a(a + b) 3 20. 2 x -x-2' x + x-6​

{3 + i, 3 - i, 3, -1}

step-by-step explanation:

the answer will be

aloha~! my name is zalgo and i am here to you out on this amazing day. to answer your question, yes, nonzero numbers can have a greatest common factor and that would be 1. still don't get it? let me considering every number is divisible by 1 and hence every number has 1 as a factor of theirs. so, if 2 nonzero numbers didn't share any gcf (greatest common factor), they would still have a factor in common and that would be 1.

i hope that this ! : p

"stay and stay proud! " - zalgo

(by the way, do you mind marking me as brainliest? i'd greatly appreciate it! mahalo! x3)