im try to post my eqaution but i want to no how to use the math tags
Follow Math Help Forum on Facebook and Google+
Go here for LaTeX help.
$\displaystyle (\frac{1}{2} + \frac{\sqrt{2}}{2} i)^2 $
So the rules are the same as for regular multiplication. Foil it out. All you have to remember is that $\displaystyle i^{2}=-1$.
View Tag Cloud