Question

simplify: (4-2i)^2

Answer 1

(4-2i)^2
(4-2i)(4-2i)
16-16i+4i^2

Answer 2

12-16i

i^2=-1if I recall right

Answer 3

How did you get the 12? I'm confused.

Answer 4

i've got multiple choice if that helps.. neither of those seem to be there.

Answer 5

That would help yes ^^ I may be answering the wrong question entirely

Answer 6

Oh and now I understand how you got that Luigi.

Answer 7

a) 12
b) 20
c) 12-16i
d) 20-16i

Answer 8

it's c

Answer 9

It is definitely C, since i^2 is actually just equal to -1 as Luigi said.

Answer 10

Good eye Luigi, you missed the negative on the last question, but I missed that little identity. We make a good team =D

Answer 11

jkldsafjpasdfpasdfsad you guys rock. i have to do this packet in order to graduate, and I have no idea how to most of it. so this is awesome. i really appreciate it.

Answer 12

Bring on anything else you have too! I'm bored and just finished finals, so I'll be here all night xD

Answer 13

will do.:)

Answer 14

We do :P But we all know you're the smart one here c:

Answer 15

Nah you're just flattering me now >.<

Answer 16

Not at all :P