Ava45018
Ava45018
20-11-2017
Mathematics
contestada
Can someone show me how to do this? Thanks
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swalley2004
swalley2004
20-11-2017
For a expression to be completely simplied all roots have to be in the numinator (including i) so you multiply by the conjugate, in this case 5-i, to pul it out of the denominator. So 2(5-i)/(5+i)(5-i) = (10-2i)/25-i^2 = 2(5-i)/26 = (5-i)/13 so C
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