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Heloisefnt
@Heloisefnt
May 2019
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Pouvez vous m'aider les exercices 2B.4 et 2B.5 svp ? :)
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PAU64
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Exercice 2B.4 :
A = 2 (3 + √5)
A = 2 * 3 + 2 * √5
A = 6 + 2√5
B = 3 (6 - √2)
B = 3 * 6 + 3 * (- √2)
B = 18 - 3√2
C = √3 (4 + √3)
C = √3 * 4 + √3 * √3
C = 4√3 + 3
C = 3 + 4√3
D = 2√3 (5 - 2√3)
D = 2√3 * 5 + 2√3 * (- 2√3)
D = 10√3 - 12
D = - 12 + 10√3
E = 5√7 (- 4 + 3√7)
E = 5√7 * (- 4) + 5√7 * 3√7
E = - 20√7 + 105
E = 105 - 20√7
F = - 9√11 (- 2√11 - 6)
F = - 9√11 * (- 2√11) - 9√11 * (- 6)
F = 198 + 54√11
Exercice 2B.5 :
A = √40
A = √4 * √10
A = 2√10
B = √99
B = √9 * √11
B = 3√11
C = √54
C = √9 * √6
C = 3√6
D = √63
D = √9 * √7
D = 3√7
E = √32
E = √16 * √2
E = 4√2
F = √288
F = √144 * √2
F = 12√2
G = √845
G = √169 * √5
G = 13√5
H = √847
H = √121 * √7
H = 11√7
2 votes
Thanks 1
heloisefnt
merci Bcp ! ;)
PAU64
de rien ;)
PAU64
* désigne "fois"
nadiab
Exo 2B4
A= 2(3+v5)
A=6+2v5
B=3(6-v2)
B= 18-3v2
C= v3(4+v3)
c= 4v3+v9
C=4v3+3
D=2v3(5-2v3)
D=10v3-4v9
D= 10v3-4*3
D=10v3-12
E= 5v7(-4+3v7)
E= -20v7+15v49
E=-15*7-20v7
E=105-20v7
F= -9v11(-2v11-6=
F=18v121+54v11
F=18*11+54v11
F=198+54v11
Exo 2 B5
A= v40= v4*10= 2v10
B= v99= v9*11= 3v11
C=v54=v6*9=3v6
D=v63=v7*9=3v7
E=v32=v2*16=4v2
F=v288=v2*144=12v2
G=v845= v5*169=13v5
H=v847=v7*121=11v7
2 votes
Thanks 2
PAU64
bon arrêtez vous 2 : ça fait plusieurs fois que je vous voie vous disputez... ne vous parlez plus l'un l'autre comme ça il n'y aura plus de problèmes ! :)
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J'aurais besoin d'aide pour le 2 de l'exercice 17 svp :)
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Besoin d'aide svp :) !!
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Bonjour , j'aurais bedoin d'aide pour l'exercice suivant
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Bonjour , j'aurais besoin d'aide pour le dernier exercice svp
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J'aurais besoin de votre aide pour l'exercice 1.4 svp :)
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Ex. 100 j'ai besoin d'aide pour cet exercice svp
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Verified answer
Exercice 2B.4 :A = 2 (3 + √5)
A = 2 * 3 + 2 * √5
A = 6 + 2√5
B = 3 (6 - √2)
B = 3 * 6 + 3 * (- √2)
B = 18 - 3√2
C = √3 (4 + √3)
C = √3 * 4 + √3 * √3
C = 4√3 + 3
C = 3 + 4√3
D = 2√3 (5 - 2√3)
D = 2√3 * 5 + 2√3 * (- 2√3)
D = 10√3 - 12
D = - 12 + 10√3
E = 5√7 (- 4 + 3√7)
E = 5√7 * (- 4) + 5√7 * 3√7
E = - 20√7 + 105
E = 105 - 20√7
F = - 9√11 (- 2√11 - 6)
F = - 9√11 * (- 2√11) - 9√11 * (- 6)
F = 198 + 54√11
Exercice 2B.5 :
A = √40
A = √4 * √10
A = 2√10
B = √99
B = √9 * √11
B = 3√11
C = √54
C = √9 * √6
C = 3√6
D = √63
D = √9 * √7
D = 3√7
E = √32
E = √16 * √2
E = 4√2
F = √288
F = √144 * √2
F = 12√2
G = √845
G = √169 * √5
G = 13√5
H = √847
H = √121 * √7
H = 11√7
A= 2(3+v5)
A=6+2v5
B=3(6-v2)
B= 18-3v2
C= v3(4+v3)
c= 4v3+v9
C=4v3+3
D=2v3(5-2v3)
D=10v3-4v9
D= 10v3-4*3
D=10v3-12
E= 5v7(-4+3v7)
E= -20v7+15v49
E=-15*7-20v7
E=105-20v7
F= -9v11(-2v11-6=
F=18v121+54v11
F=18*11+54v11
F=198+54v11
Exo 2 B5
A= v40= v4*10= 2v10
B= v99= v9*11= 3v11
C=v54=v6*9=3v6
D=v63=v7*9=3v7
E=v32=v2*16=4v2
F=v288=v2*144=12v2
G=v845= v5*169=13v5
H=v847=v7*121=11v7