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cece9222
@cece9222
April 2022
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Salut,
Est ce que quelqu’un pourrait m’aider svp ??
Merci ❤️
C’est un devoir de 4ème.
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adsmdevoirs
Réponse :Explications étape par étape :2)AH en fonction de x[tex]AH=AB-BH\\AH=4-x[/tex][tex]Aire (AHIJ)=AH^{2} \\Aire (AHIJ)=(4-x)^{2}[/tex]Aire (AHIJ) = [tex]AH^{2}=(4-x)^{2}[/tex]Aire (AEFG) = 2 x 2 = 4Aire (Partie Gri) = Aire (AHIJ) - Aire (AEFG) = [tex](4-x)^{2}-4[/tex] = [tex](4-x)^{2} -2^{2} =M[/tex]3)[tex]Q=(4-x)^{2} -4\\Q=4^{2} -2*x*4+x^{2} -4\\Q= 16-8x+x^{2} -4\\Q=x^{2} -8x+12[/tex]4)x=2[tex]Q= 2^{2} -8*2+12\\Q= 4-16+12\\Q-12+12\\Q=0[/tex]Les carrés ABCD et AHIJ seront confondus
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Thanks 1
cece9222
Merci beaucoup !
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