2014 National Question 2 Single-choice Differentiating 2014_退役省自主命题 (2014·文) 2.复数 $(3+2 i) i$ 等于( ) A. $-2-3 i$B. $-2+3 i$C. $2-3 i$D. $2+3 i$ Answer keyB ☆ SaveCan't do it, show the explanation查看原卷 →