B -13 -34i
(7 + 2i)(-3 - 4i)
Take the 7 then times it buy the second bracket 7x(-3-4i) then take 2i from the first bracket and times it with the second bracket 2ix (-3-4i)
Then keep simplifying
They need to have common denomenators so change the fractions to 12/15 - 5/15 which is 7/15.
Answer:
1. 81
2. 108 1/2
3. 189 1/2
Step-by-step explanation:
One has only one owner and the other have several.