Posted by Jon on Saturday, March 1, 2008 at 9:48am.
no.... from your
(2+i/1-3i) * (1+3i/1+3i)
= (2+i)/(1-3i) * (1+3i)/(1+3i)
= (2 + 6i + i - 3i^2)/(1 - 9i^2) remember i^2 = -1
= (5+7i)/10
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