answersLogoWhite

0

(9 + 4i)^2

= 9^2 + (2)(9)(4i) +i^2 substitute i^2 for -1;

= 81 + 72i -1

= 80 + 72i

User Avatar

Wiki User

16y ago

Still curious? Ask our experts.

Chat with our AI personalities

ViviVivi
Your ride-or-die bestie who's seen you through every high and low.
Chat with Vivi
MaxineMaxine
I respect you enough to keep it real.
Chat with Maxine
JordanJordan
Looking for a career mentor? I've seen my fair share of shake-ups.
Chat with Jordan

Add your answer:

Earn +20 pts
Q: How do you solve 9 plus 4i quantity squared?
Write your answer...
Submit
Still have questions?
magnify glass
imp