2016 National Question 2 Single-choice Differentiating 2016_新课标I Paper 2.(5分)设(1+2i)(a+i)的实部与虚部相等,其中a为实数,则a等于() A. ﹣3B. ﹣2C. 2D. 3 Answer keyA ☆ SaveCan't do it, show the explanation查看原卷 →