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Alexis77390
@Alexis77390
April 2019
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Bonjour, j'ai vraiment besoin d'aide svp
Merci d'avance. C'est le 52.
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Commentaires (2)
1.x-3-2=0 x-3+2=0
x-5=0 x-1=0
x=5. x=1.
S={5;1}
b.c'est sous la forme A²-B².
(x-3)-2=0
-2x -6=0
-2x=6
x=-3.
2.(5-3x)-1=0
-5+3x=0
3x=5
x=5/3
S={5/3}.
(les "x" sont les inconnus).
En esperant t'avoir aidé! ;)
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Devoir de maths. Merci d'avance :)
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x-5=0 x-1=0
x=5. x=1.
S={5;1}
b.c'est sous la forme A²-B².
(x-3)-2=0
-2x -6=0
-2x=6
x=-3.
2.(5-3x)-1=0
-5+3x=0
3x=5
x=5/3
S={5/3}.
(les "x" sont les inconnus).
En esperant t'avoir aidé! ;)