Bonjour,
Résoudre l'équation:
2x(x+1) + 3=(2x+2) (x-3)
2x(x+1) + 3 - (2x+2) (x-3)= 0
2x²+2x+3- (2x²+2x-6x-6)= 0
2x²+2x+3-2x²+4x+6= 0
6x+9= 0
6x= -9
x= -9/6
x= -3/2
S= { -3/2 }
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Bonjour,
Résoudre l'équation:
2x(x+1) + 3=(2x+2) (x-3)
2x(x+1) + 3 - (2x+2) (x-3)= 0
2x²+2x+3- (2x²+2x-6x-6)= 0
2x²+2x+3-2x²+4x+6= 0
6x+9= 0
6x= -9
x= -9/6
x= -3/2
S= { -3/2 }