Question

Solve
5+8i-4+2i

Answer 1

Simply add/subtract the real and imaginary parts separately and express in "a+ib" form!

Answer 2

so 1+10i?

Answer 3

^that's right

Answer 4

yeah correct-o!

Answer 5

wat about i7? 7 is an exponent

Answer 6

you mean \(\iota^7\) right?

Answer 7

yea i guess

Answer 8

okay do you know that i^2 =-1, i^3=-i, i^4=1, i^5=i again, i^6=-i... and so on?

what would i^7 be according to this trend?

Answer 9

-1?

Answer 10

here's a hint for you!!

if the exponent is odd (except for 3) the answer is -i
if the exponent is even (other than 2) the answer is 1

Answer 11

ohk so its -i

Answer 12

yes -i!

Answer 13

ohk thnx!

Answer 14

anytime!