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Esila14
@Esila14
May 2019
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Bonjour je reposte ma question c'est TRES urgent pour demain : j'ai des difficultés en math et je n'arrive pas sur cette exercice merci d'avance
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lagirl1
A) AM=AN=x donc DM=NB=6-x d'ou A(MDC)=A(NBC)=MD X DC/2=(6-x)X6/2=(6-x) X 3=6 X 3-x X 3=18-3x
b)A(AMCN)=A(ABCD)-A(MDC)-A(NBC)=A(ABCD)-2 X A(MDC)
A(AMCN)=6²-2 X (18-3x)=36-36+6x=6x
c)si x=2cm, A(MDC)=A(NBC)=18-3 X 2=18-6=12 cm² et A(AMCN)=6 X 2=12 cm²
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Thanks 1
Esila14
Merci beaucoup !
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URGENT ! Bonjour pourriez vous m'aidez a faire cet exercise qui semble assez court ? Merci beaucoup !
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Bonjour j'ai cet exercise qui semble tres court merci d'avance.
Responda
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b)A(AMCN)=A(ABCD)-A(MDC)-A(NBC)=A(ABCD)-2 X A(MDC)
A(AMCN)=6²-2 X (18-3x)=36-36+6x=6x
c)si x=2cm, A(MDC)=A(NBC)=18-3 X 2=18-6=12 cm² et A(AMCN)=6 X 2=12 cm²