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anonymous
 one year ago
Having trouble getting this in (ab+i)/c form. Thanks for any help.
(2+6i)/(39i)
anonymous
 one year ago
Having trouble getting this in (ab+i)/c form. Thanks for any help. (2+6i)/(39i)

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zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.2multiply top and bottom by \(3+9i\)

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.2\[\dfrac{(2+6i)}{(39i)}\dfrac{(3+9i)}{(3+9i)}=\dfrac{6+18i+18i+54i^2}{3+27i27i81i^2}\] Remembering \(i^2=1\) can you now solve the problem?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I got 48+36i/90 so 16+9i/30 yes? I think I multiplied by 39i the first time and that's why I couldn't get it to work out.
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