Question

simplify to a+bi form.
equation in comments.
medal for correct answer.

Answer 1

\[(4+3 \sqrt-2)^2\]
a) \[-2+24i \sqrt2\]
b)\[34+48i \sqrt2 \]
c)\[2-24i \sqrt2\]
d) \[-34-48i \sqrt2\]

Answer 2

Hi @kaytiey
Let's just FOIL it or something...
\[\Large (a+b)^2 =a^2+2ab+b^2\]

Answer 3

ok

Answer 4

so what now?/

Answer 5

a

Answer 6

Let's apply it.
\[\Large (4+3\sqrt{-2})^2 = 4^2+2[4][3\sqrt{-2} \ ]+[3\sqrt{-2} \ ]^2\]