Question

(7+8i)-(3+6i)

Answer 1

4+2i
which should go to 4-2 because i=-1
and then 4-2 is 2

Answer 2

did u foil?

Answer 3

i didn;t know that's what you were doin. hang on

Answer 4

-69-6 i think

Answer 5

\[i= \sqrt{-1}\]

Answer 6

@Umangiasd how did u get that?

Answer 7

that's a definition xD, i'm guessing we're talking 'bout imaginary numbers here ^^!

Answer 8

yes we are but how do u solve with it?

Answer 9

take it as a constant, then your result is just 4+2i, or \[4+2\sqrt{-1}\]

Answer 10

i got -3

Answer 11

nope, sqrt{-1} is not a real number.

Answer 12

im sorry im lost can work this together?

Answer 13

sure, first read the page i'll send you on a message

Answer 14

okay done i=-1

Answer 15

noooooo, i=sqrt^{-1}, i^2=-1

Answer 16

4+2i