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Azra40
@Azra40
June 2019
1
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Bonsoir c est pour demain svp aider moi
x=4 x=0 x=-2
3(2x-7)-5x=
(x-4)(x-2)=
(2-x²)=
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Skabetix
Bonjour,
Tu as juste à remplacer x par la valeur soit :
pour x = 4
3((2x4)-7)-5x4
= 3(1)-20
= 3-20
=-17
(x-4)(x-2)
=(4-4)(4-2)
=0
(2 -4^2)
= 2 -16
=-14
pour x=0
3((2x0)-7)-5x0
=3(-7)
=-21
(0-4)(0-2)
= -4 x (-2)
=8
(2-0^2)
=2
pour x=-2
3((2x(-2)-7)-5x(-2)
=3(-4-7)+10
=3x(-11) +10
= -33 +10
=-23
(-2-4)(-2-2)
= (-6) x (-4)
= 24
(2 -2^2)
= 2 +4
=6
Bonne fêtes de fin d'année :)
2 votes
Thanks 1
Skabetix
Avec plaisir !
Skabetix
1 ère Scientifique
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Lista de comentários
Tu as juste à remplacer x par la valeur soit :
pour x = 4
3((2x4)-7)-5x4
= 3(1)-20
= 3-20
=-17
(x-4)(x-2)
=(4-4)(4-2)
=0
(2 -4^2)
= 2 -16
=-14
pour x=0
3((2x0)-7)-5x0
=3(-7)
=-21
(0-4)(0-2)
= -4 x (-2)
=8
(2-0^2)
=2
pour x=-2
3((2x(-2)-7)-5x(-2)
=3(-4-7)+10
=3x(-11) +10
= -33 +10
=-23
(-2-4)(-2-2)
= (-6) x (-4)
= 24
(2 -2^2)
= 2 +4
=6
Bonne fêtes de fin d'année :)