Réponse:
A)
5x+3=-1-3x
5x+3x=-1-3
8x=-4
x=-4/8=-1/2
B)
2/3x+4=x-5
2/3x-x=-5-4
-1/3x=-9
x=-9/(-1/3)
x=27
C)
(x-5)^2=9
Racine ((x-5)^2)= racine(9)
(x-5)=3
x-5=3
x=8
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Réponse:
A)
5x+3=-1-3x
5x+3x=-1-3
8x=-4
x=-4/8=-1/2
B)
2/3x+4=x-5
2/3x-x=-5-4
-1/3x=-9
x=-9/(-1/3)
x=27
C)
(x-5)^2=9
Racine ((x-5)^2)= racine(9)
(x-5)=3
x-5=3
x=8