Question

Please anyone help and explain :(

Answer 1

We solved plenty many questions like that today. Didn't we?

Answer 2

I simplified it to \[(4 + i \sqrt{3}) x (4-i \sqrt{3})\]

Answer 3

Yes but I am not sure if I am doing them correctly. it the one I typed ^ correct?

Answer 4

ye weren't supposed to do that, exactly.
see, let's forget that imaginary thing here.
We have a=4 and b=sqrt-3
There's 'aight?

Answer 5

now, you know (a+b)^2?

Answer 6

yes

Answer 7

well, put the values 4 and i(sqrt(3)) in there... what does that give you?

Answer 8

\[4^{2} + 2 (4 x i \sqrt{3}) + (i \sqrt{3}) ^{2}\]

Answer 9

is it correct?

Answer 10

Yes, indeed it is!
Now, the solution will come in to be...

Answer 11

\[16 + 8 + 2 -\sqrt{3} - \sqrt{3}\]

Answer 12

is this correct?

Answer 13

@NeetziD

Answer 14

It's 16 - 8(sqrt3) i -3 actually. You made a mistake there, I guess. Just stop writing x instead of multiplication...

Answer 15

sorry. would the answer be 13-8i(sqrt3)

Answer 16

Yes. There you go, solved!
Practice a few more questions on your own. You'll get it.

Answer 17

Thank you so much!!!

Answer 18

YW. :)