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수학동아 - 폴리매스
본문바로가기
함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
[창의 퍼즐] 이차방정식—쉽지만 어려운 문제
RTAI 2020.05.03 07:23 조회 788
문제 푼 사람 2명
공유하기
페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

이차방정식 5a*2 + 7a + 12=117의 한 근을 b,이차방정식 3a*2+8a+11=35의 한 근을 c라고 할때, 7/15b+c+3/8c*2+1/3b*2+9를 구해보세용

 

이때 * 기호는 제곱을 의미 합니당. 예를 들어 a*2은 a의 제곱 입니다.

간단한 풀이과정과 함께 답도 써주세용~

 

-위 그림은 그냥 이차방정식이며, 문제와는 상관이 없습니다.:)

이 문제 어떠셨나요?

글쎄요

1

어려워요

0

문제 찜하기 목록보기
댓글 6
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  •  
    RTAI Lv.7 2020.05.03 07:24

    비댓과 정답요청

     

    댓글 작성하기 좋아요0 댓글수0
  •  
    아인수타인 Lv.12 2020.05.03 07:57

    ㅋㅋㅋ 닉네임이 저랑 좀 비슷하네요ㅋㅋ

    댓글 작성하기 좋아요1 댓글수1
    •  
      RTAI Lv.7 2020.05.03 22:23

      ㅋ 그러네요

       

      좋아요0
  •  
    해결
    내손안의흑염소 Lv.4 2020.05.03 20:35 비밀댓글
    비밀 댓글이 등록 되었습니다.
    댓글 작성하기 댓글수1
    •  
      RTAI Lv.7 2020.05.03 22:28

      풀이과정은 저와 다르지만 맞으셨네요, 기린은코어떻게팔까 님!

      좋아요0
  •  
    해결
    JM Lv.6 2021.06.22 23:50 비밀댓글
    비밀 댓글이 등록 되었습니다.
    댓글 작성하기 댓글수0
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