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Liongiant
@Liongiant
May 2019
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Bonjour à tous
Pourriez vous m'aider pour l'exercice 4 s'il vous plaît je ne m'en sors pas!!!! Merci beaucoup d'avance !!!!c'est du niveau 2nde.
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trudelmichel
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√bonjour,
((x+1)/3)x-2x(x+2)=0
((x²+x)/3-2x²-4x=0
(x²+x-6x²-12x)/3=0
-5x²-11x=0
x(-5x-11)=0
x=0
-5x-11=0 5x=-11 x=-11/5 x=-0.2
(x +√3)(-x+4)+(2x+2√3)(3x+1)=0
(x+√3)(-x+4)+2(x+√3)((3x+1)=0
(x+√3)((-x+4)+2(3x+1))=0
(x+√3)(-x+4+6x+2)=0
(x+√3)(5x+6)=0
x+√3=0 x=-√3
5x+6=0 5x=-6 x=-6/5 x=-1.2
(x-1)(x+3)=x²
x²-x+3x-3=x²
x²-x²+2x-3=0
2x-3=0
2x=3
x=3/2
x=1.5
(2x+1)-(4x+2)(x-3)=3(2x+1)
(2x+1)-(2(2x+1)(x-3)=3(2x+1)
(2x+1)-(2x+1)(2x-6)=3(2x+1)
(2x+1)-(2x+1)(2x-6)-3-2x+1)=0
(2x+1)((1)-(2x-6)-3))=0
(2x+1)(1-20+6-3)=0
(2x+1)(-2x+4)=0
2x+1=0 2x=-1 x=-1/2 x=-0.5
-2x+4=0 2x=4 x=4/2 x=2
x²+x(x-3)=0
x²+x²-3x=0
2x²-3x=0
x(2x-3)=0
x=0
2x-3=0 2x=3 x=3/2 x=1.5
5x(6x-1)=(10x-7)(3x+11)
30x²-5x=30x²-21x+10x-7
30x²-5x=30x²+9x-7
=30x²+9x-7-30x²+5x
0=14x-7
14x=7
x=7/14
x=0.5
(1-3x)²=4
'1-3x)²-4=0
(1-3x)²-2²=0
((1-3x)+2)((1-3x)-2)=0
(3-3x)(-3x-1)=0
3-3x=0 3x=3 x=1
-3x-1=0 3x=-1 x=-1/3
x(x-10)=-25
x²-10x=-25
x²-10x+25=0
(x-5)²=0
x-5=0
x=5
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Bonsoir Avant que de poster ma question je voudrai prendre mon DM en photo pour le poster mais je ne sais pas du tout comment faire,j'ai une tablette Merci beaucoup pour votre aide!!!!!!
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Verified answer
√bonjour,((x+1)/3)x-2x(x+2)=0
((x²+x)/3-2x²-4x=0
(x²+x-6x²-12x)/3=0
-5x²-11x=0
x(-5x-11)=0
x=0
-5x-11=0 5x=-11 x=-11/5 x=-0.2
(x +√3)(-x+4)+(2x+2√3)(3x+1)=0
(x+√3)(-x+4)+2(x+√3)((3x+1)=0
(x+√3)((-x+4)+2(3x+1))=0
(x+√3)(-x+4+6x+2)=0
(x+√3)(5x+6)=0
x+√3=0 x=-√3
5x+6=0 5x=-6 x=-6/5 x=-1.2
(x-1)(x+3)=x²
x²-x+3x-3=x²
x²-x²+2x-3=0
2x-3=0
2x=3
x=3/2
x=1.5
(2x+1)-(4x+2)(x-3)=3(2x+1)
(2x+1)-(2(2x+1)(x-3)=3(2x+1)
(2x+1)-(2x+1)(2x-6)=3(2x+1)
(2x+1)-(2x+1)(2x-6)-3-2x+1)=0
(2x+1)((1)-(2x-6)-3))=0
(2x+1)(1-20+6-3)=0
(2x+1)(-2x+4)=0
2x+1=0 2x=-1 x=-1/2 x=-0.5
-2x+4=0 2x=4 x=4/2 x=2
x²+x(x-3)=0
x²+x²-3x=0
2x²-3x=0
x(2x-3)=0
x=0
2x-3=0 2x=3 x=3/2 x=1.5
5x(6x-1)=(10x-7)(3x+11)
30x²-5x=30x²-21x+10x-7
30x²-5x=30x²+9x-7
=30x²+9x-7-30x²+5x
0=14x-7
14x=7
x=7/14
x=0.5
(1-3x)²=4
'1-3x)²-4=0
(1-3x)²-2²=0
((1-3x)+2)((1-3x)-2)=0
(3-3x)(-3x-1)=0
3-3x=0 3x=3 x=1
-3x-1=0 3x=-1 x=-1/3
x(x-10)=-25
x²-10x=-25
x²-10x+25=0
(x-5)²=0
x-5=0
x=5