



 
Hi Krys. The important principle is to use the difference of squares principle to your advantage. The square of i is negative one, of course, so (a + bi)(a  bi) = a^{2} + b^{2}. See how the imaginary part disappears? Although I cannot solve your entire problem for you, I'll solve one that is identical in form to yours to show you how I use this principle. Hope this helps,  


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