Simplify $\dfrac{2 + i}{1 - i}$.
A$2 + i$
B$\dfrac{1}{2} + \dfrac{3}{2}i$
C$\dfrac{3}{2} + \dfrac{1}{2}i$
D$1 + 3i$
Answer & Solution
Correct answer: B. $\dfrac{1}{2} + \dfrac{3}{2}i$
Multiply by $\dfrac{1+i}{1+i}$: $\dfrac{(2+i)(1+i)}{2} = \dfrac{1 + 3i}{2}$.
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