Gaokao Math Practice Question
2. (5 分) $\frac{1+2 i}{(1-i)^{2}}=(\quad)$
- A.$-1-\frac{1}{2} \mathrm{i}$
- B.$-1+\frac{1}{2} \mathrm{i}$
- C.$1+\frac{1}{2} \mathrm{i}$
- D.$1-\frac{1}{2} \mathrm{i}$
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