Question

√-1
________
(2 - 4i) - (5 +3i)

Simplify the expression

Answer 1

\[\sqrt{-1}\over (2-4i)(5+3i)\]Is the expression?

Answer 2

yes it is

Answer 3

Or is it\[\sqrt{-1}\over (2-4i) - (5+3i)\]

Answer 4

yeah that is correct

Answer 5

If it is the first\[7-11i \over 340\]If it is the second:\[-(3i+7)\over 58\]

Answer 6

how did you get 58? I got 40

Answer 7

I got 9-49i^2 or that would be 9 -(49)(-1)=9+49=58
but you got me worried let me recheck.

Answer 8

lol ok

Answer 9

(-3-7i)(-3+7i)=9 -49 i^2=9+49=58

Answer 10

Oh ok, yeah I looked back at my work and I added wrong. so it would be
-7 - 3i / 58

Answer 11

don't forget\[i ^{2}=-1\]

Answer 12

So wait.. is it -7 - 3i /58, because before I put i as -1, it was -3i + 7i^2

Answer 13

I changed the two signs by placing the sign to the left and on the viniculum

Answer 14

Yes,

-3i-7 3i+7
------- or - -----
58 58

note the minus sign to the left (middle) of the 2nd term.

Answer 15

Thank you very much :)

Answer 16

u r welcome