anonymous
  • anonymous
Having trouble getting this in (ab+i)/c form. Thanks for any help. (2+6i)/(3-9i)
Algebra
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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zzr0ck3r
  • zzr0ck3r
multiply top and bottom by \(3+9i\)
zzr0ck3r
  • zzr0ck3r
\[\dfrac{(2+6i)}{(3-9i)}\dfrac{(3+9i)}{(3+9i)}=\dfrac{6+18i+18i+54i^2}{3+27i-27i-81i^2}\] Remembering \(i^2=-1\) can you now solve the problem?
anonymous
  • anonymous
I got -48+36i/90 so -16+9i/30 yes? I think I multiplied by 3-9i the first time and that's why I couldn't get it to work out.

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