Ask
your own question, for FREE!
Mathematics
6 Online
nothing
Still Need Help?
Join the QuestionCove community and study together with friends!
FOIL.
The multiplication of complex numbers can be made as following, \[(−3 + 2i) • (2 + i)=(-3)\cdot 2+(-3)\cdot i+2i\cdot 2+2i\cdot i\]Now remember that \[i^2=-1\]And you can solve.
-8+i
-8+i
@rbeckford134 i^2 is -1
Still Need Help?
Join the QuestionCove community and study together with friends!
its -8+i im positive
YES! Just realized my error!!!! hahaa.
we are human its ok :)
Lol. I was doing this way too fast. haha. -3 (2) = 06 -3 (i) = -3i 2i (2) = 4i 2i (i) = 2i^2 -6 - 3i + 4i + 2i^2 -6 - i + 2 ( 1) - ------- - 2(i) = 2 (-1) = -2 -6 - i +2 -6 - 2 - i -8 - i
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
playtsec:
how do I sleep without getting a sore throat? I always wake up with a sore throat but it goes away later in the day.
75:
how do you react when you deal with someone who plays the victim in every single situation, and do you find this behavior childish or annoying.
JohnnyLFowler0812:
Do you guys ever think that the homeless are going to be healthy and freed from h
JohnnyLFowler0812:
Do you guys ever think that Hikaru Nikanura will ever be take Magnus Calrsen's 1st place title in the wolrdin the United States amd Norway? Right now Hikaru
DoltonCarlee:
what are y'all's options on S A T essays because honestly their not that bad
thereneelg:
Can someone give me a summary of article 231, The war guilt clause?? I need to explain what it is, but I can't find any shortened version of what it is and
luisaam2:
What should you do when the person you want to talk to the most is the one making
2 hours ago
8 Replies
2 Medals
2 hours ago
2 Replies
0 Medals
30 minutes ago
7 Replies
1 Medal
4 hours ago
2 Replies
0 Medals
4 hours ago
7 Replies
2 Medals
3 days ago
7 Replies
1 Medal
2 days ago
16 Replies
1 Medal