viewimage.php?id=20bcc42e&no=24b0d769e1d32ca73deb86fa11d02831d16706cea37200d6da9182798677dc7d2cb1ed125f4c8d49fbfdedb4f94e1a34462da1459b958a551ddd61f4fffa2160fee4a1104d4e924aa85a967bf9a4c41b3f126a961defd4b88585d7

복소수 곱셈정의 ac-bd인데 d 끄트머리 인쇄안돼서 a로 보임;;;;