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Marinne19
@Marinne19
January 2021
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Aider moi s'il vous plaît je ne comprend pas trop je suis en 4eme exercice 2 svp merci d'avance
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eivmam
1) Périmètre=2(10-2x)+2(3x-2)=20-4x+6x-4=2x+16
2) a) aire=(3x-2)(10-2x)
b) aire=30x-6x^2-20+4x=-6x^2+34x-20
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Thanks 1
Marinne19
Merci beaucoup
MAHAM
Salut
EXO II
1) P=2(L+l)
P=2(3x-2+10-2x)
P=2(x+8)
P=2x+16
2) forme factorisée
A=L×l
A=(3x-2)(10-2x)
FDet reduite
A=(3x-2)(10-2x)
A=30x-6x²-20+4x
A=-6x²+34x-20
1 votes
Thanks 1
Marinne19
Merci beaucoup
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2) a) aire=(3x-2)(10-2x)
b) aire=30x-6x^2-20+4x=-6x^2+34x-20
EXO II
1) P=2(L+l)
P=2(3x-2+10-2x)
P=2(x+8)
P=2x+16
2) forme factorisée
A=L×l
A=(3x-2)(10-2x)
FDet reduite
A=(3x-2)(10-2x)
A=30x-6x²-20+4x
A=-6x²+34x-20