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SAT® Subject Test in Math 1 & 2

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Moderate

Dividing Complex Numbers

SATSTM-5Y1HJE

Which one of the following is equivalent to the expression $\cfrac{5}{3-i}$?

A

$3+i$

B

$\cfrac{3}{2}+\cfrac{1}{2}i$

C

$2-4i$

D

$15+5i$

E

$\cfrac{15}{8}-\cfrac{5}{8}i$