31.計算(2+3i)(1-5i)= (A)-13+7i (B)-13-7i (C)17+7i (D)17-7i (i為虛數單位)

問題詳情

31.計算(2+3i)(1-5i)=
(A)-13+7i
(B)-13-7i
(C)17+7i
(D)17-7i (i為虛數單位)

參考答案

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