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lala12p03
@lala12p03
January 2021
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.Bonjour de l'aide pour un autre exo comme ça svp
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Bonjour,
A résoudre
(5x+1)(8-x)=0
5x+1=0 ou -x+8=0
5x= -1 -x= -8
x= -1/5 x= 8
(3x-1) + (7-x)= 0
3x-1+7-x= 0
2x+6=0
2x= -6
x= -6/2
x= -3
(8+3x) - (x+3)=0
8+3x-x-3=0
2x+5=0
2x= -5
x= -5/2
(-10x+3)(x+23)=0
-10x+3= 0 ou x+23=0
-10x= -3 x= -23
x= -3/ -10
x= 3/10
6(y+3) - 2(y-1)= 0
tu développes
6y+18 - 2y + 2= 0
4y +20= 0
4y= -20
y= -20/4
y= -5
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Bonjour,A résoudre
(5x+1)(8-x)=0
5x+1=0 ou -x+8=0
5x= -1 -x= -8
x= -1/5 x= 8
(3x-1) + (7-x)= 0
3x-1+7-x= 0
2x+6=0
2x= -6
x= -6/2
x= -3
(8+3x) - (x+3)=0
8+3x-x-3=0
2x+5=0
2x= -5
x= -5/2
(-10x+3)(x+23)=0
-10x+3= 0 ou x+23=0
-10x= -3 x= -23
x= -3/ -10
x= 3/10
6(y+3) - 2(y-1)= 0
tu développes
6y+18 - 2y + 2= 0
4y +20= 0
4y= -20
y= -20/4
y= -5