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Romero Group TitleBest ResponseYou've already chosen the best response.0
\[\frac{2}{3+i}\]
 2 years ago

Romero Group TitleBest ResponseYou've already chosen the best response.0
\[a) \frac{3i}{4}\] \[b) \frac{3i}{5}\] \[c)\frac{4i}{4}\] \[d) \frac{4i}{5}\]
 2 years ago

Romero Group TitleBest ResponseYou've already chosen the best response.0
I said the answer was a but I got it wrong. It says that it suppose to be b can anyone explain?
 2 years ago

gogind Group TitleBest ResponseYou've already chosen the best response.2
\[\frac{2}{3+i} = \frac{2}{3+i} \frac{3i}{3i} = \frac{2(3i)}{3^2 i^2} = \frac{2(3i)}{9(1)} = \frac{3i}{5}\]
 2 years ago

denbiner Group TitleBest ResponseYou've already chosen the best response.1
because i is a radical... you cannot have a radical in the denominator so you need to rationalize the denominator so that the radical goes away from the denom..... so you multiply everything times its conjugate and simplify
 2 years ago
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