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Math1404
@Math1404
May 2019
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Bonjour, svp aider moi à cet exercice,c'est un dm. (niveau 2nde)
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ichrak0803
2)
2)
=(x+3)(4x-8)-(2x+6)(x+6)
=4x²-8x+12x-24-(2x²+12x+6x+36)
=4x²-8x+12x-24-2x²-12x-6x+36
=4x²
-2x²-8x+12x-12x-6x-24+36
=2x²-14x+12
3)
x+3=0
x=-3
4x-8=0
4x=8
x=8/4
x=2
2x+6=0
2x=-6
x=-6/2
x=-3
x+6=0
x=-6
3)
(2x-6)4
8x-24
8x=24
x=24/8
x=3
pour 2(x+6)
(2(x+6))4
(2x+12)4
8x+24
8x=-24
x=-24/8
x=-3
pour(x-3)
(x-3)4
4x-12
4x=12
x=12/4
x=3
cest ce que je pouvais faire
bonne soirée mon amie
2 votes
Thanks 2
Math1404
merci beaucoup
ichrak0803
de rien
ichrak0803
tu peux mettre la mielleure reponse mon amie<3
Math1404
étant donné qu'il n'y a que toi oui, et je ne peux pas encore
ichrak0803
normal bonne soirée mon amie
ichrak0803
<3
Math1404
bonne soirée à toi aussi
ichrak0803
merci
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Lista de comentários
2)
=(x+3)(4x-8)-(2x+6)(x+6)
=4x²-8x+12x-24-(2x²+12x+6x+36)
=4x²-8x+12x-24-2x²-12x-6x+36
=4x²-2x²-8x+12x-12x-6x-24+36
=2x²-14x+12
3)
x+3=0
x=-3
4x-8=0
4x=8
x=8/4
x=2
2x+6=0
2x=-6
x=-6/2
x=-3
x+6=0
x=-6
3)
(2x-6)4
8x-24
8x=24
x=24/8
x=3
pour 2(x+6)
(2(x+6))4
(2x+12)4
8x+24
8x=-24
x=-24/8
x=-3
pour(x-3)
(x-3)4
4x-12
4x=12
x=12/4
x=3
cest ce que je pouvais faire
bonne soirée mon amie