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Lilali
@Lilali
April 2019
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Bonjour voila mon devoir !!a tout de suite :*
http://nosdevoirs.fr/devoir/673977
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salalozi
A= (√3-5) (√3 +5)
(√3)²-(5)²
=3-25
=-22
B= (√17 -8)(√17+8)
=(√17)²-(8)²
=17-64
=-47
C= (6-√7)(6+√7)
=(6)²-(√7)²
=36-7
=29
D=(√13-5)
=-5+√13
E=(√3-√2)(√3+√2)
=(√3)²-(√2)²
=3-2
=1
F= (5-√8)²
5²-2x5x√8 +√8²
25-20√2 +8
=33-20√2
G=(-3+√11)²
=-3²+2x-3x√11 +√11²
=-9-6√11 +11
=2-6√11
H=(√11+√7)(√11-√7)
(
√11)²-(√7)²
11-7
=4
2 votes
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Bonsoir ! URGENT ,Aidez moi svp pour mon devoir ... Quelle est la nature de chacun des triangles suivants ? Justifier dans chaque cas . a) le triangle IJK tel que IK =8,2 cm ;IJ=5,3 cm et JK =6,3 cm . b) Le triangle FGH tel que FG =33 cm; GH =56cm et FH =65 cm . Urgent SVP SVP
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Bonjour est ce que vous pouvez m'aider pour mon devoir merci d'avance ! Si vous avez besoin de photo en plus ou d'informations en plus merci de me le faire savoir .
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Lista de comentários
(√3)²-(5)²
=3-25
=-22
B= (√17 -8)(√17+8)
=(√17)²-(8)²
=17-64
=-47
C= (6-√7)(6+√7)
=(6)²-(√7)²
=36-7
=29
D=(√13-5)
=-5+√13
E=(√3-√2)(√3+√2)
=(√3)²-(√2)²
=3-2
=1
F= (5-√8)²
5²-2x5x√8 +√8²
25-20√2 +8
=33-20√2
G=(-3+√11)²
=-3²+2x-3x√11 +√11²
=-9-6√11 +11
=2-6√11
H=(√11+√7)(√11-√7)
(√11)²-(√7)²
11-7
=4