Articles
Register
Sign In
Search
Clotytilde
@Clotytilde
April 2019
1
210
Report
Exercice 1 équations niveau 3ème
Please enter comments
Please enter your name.
Please enter the correct email address.
Agree to
terms and service
You must agree before submitting.
Send
Lista de comentários
bugs
(7x-1)(2x+6)=0
7x-1=0 ou 2x+6=0
7x=1 2x=-6
x=1/7 x= -6/2 = -3
----------------------------------------------------------------------------------------------
3(2x-6)=5(3x+2)-4x
(6x-18)=(5x+10)-4x
6x-18=1x+10
------------------------------------------------------------------------------------------------
3x
²-27=12
3x
²=12+27=39
x
²=39/3=13
x
²=racine carré de 13
x=13
---------------------------------------------------------------------------------------------------
(4x+5)
²-(4x+5)(3x-1)=0
(4x+5)(4x+5)-(4x+5)(3x-1)=0
4x+5[(4x+5)-(4x+5)(3x-1)=0]
4x+5[(4x+5)-(12x+4)=0]
4x+5(4x+5-12x+4)=0
4x+5(-8x+9)=0
je penses que ::))) la suite est>>
4x+5=0 ou -8x+9=0
4x=-5 -8x=-9
x=-5/4 x=-9/8
---------------------------------------------------------------------------------------------
formule= (a-b)²= a²-2ab+b² donc on a:
(5x-4)²=16x²
25x²-(2*4*5x=) 40x + 16= 16x²
=25x²-40x+16=16x²
25x²-40x=16x²-16
/(-40) }
25x²-x²=-40
et /x² }
x²-x²=-40/25
x= 1,6
PS POUR CELUİ LA J'Aİ GALERE DU COUP JE SUİS PAS SURE NON PLUS
-----------------------------------------------------------------------------------------------------------------
ça devient dur mais j'essaie quand meme :
64x²-48x+9=0
64x²-48x=-9
64x²+x=-9+48=39
x²+)39/64
x=racine carrée de 39/64=0,8
je suis sur pour le debut et moins pour les 2 dernieres masi j'espere t'avoir aidé :)
0 votes
Thanks 0
More Questions From This User
See All
clotytilde
June 2021 | 0 Respostas
Responda
clotytilde
June 2021 | 0 Respostas
Responda
clotytilde
June 2021 | 0 Respostas
Responda
Clotytilde
April 2019 | 0 Respostas
Responda
Clotytilde
April 2019 | 0 Respostas
Niveau 3eme factorisation seulement le a) de l'ex 66
Responda
Clotytilde
April 2019 | 0 Respostas
Responda
Clotytilde
April 2019 | 0 Respostas
Responda
Clotytilde
April 2019 | 0 Respostas
Responda
Clotytilde
April 2019 | 0 Respostas
Responda
Clotytilde
April 2019 | 0 Respostas
Responda
×
Report "Exercice 1 équations niveau 3ème.... Pergunta de ideia de Clotytilde"
Your name
Email
Reason
-Select Reason-
Pornographic
Defamatory
Illegal/Unlawful
Spam
Other Terms Of Service Violation
File a copyright complaint
Description
Helpful Links
Sobre nós
Política de Privacidade
Termos e Condições
direito autoral
Contate-Nos
Helpful Social
Get monthly updates
Submit
Copyright © 2024 ELIBRARY.TIPS - All rights reserved.
Lista de comentários
7x-1=0 ou 2x+6=0
7x=1 2x=-6
x=1/7 x= -6/2 = -3
----------------------------------------------------------------------------------------------
3(2x-6)=5(3x+2)-4x
(6x-18)=(5x+10)-4x
6x-18=1x+10
------------------------------------------------------------------------------------------------
3x²-27=12
3x²=12+27=39
x²=39/3=13
x²=racine carré de 13
x=13
---------------------------------------------------------------------------------------------------
(4x+5)²-(4x+5)(3x-1)=0
(4x+5)(4x+5)-(4x+5)(3x-1)=0
4x+5[(4x+5)-(4x+5)(3x-1)=0]
4x+5[(4x+5)-(12x+4)=0]
4x+5(4x+5-12x+4)=0
4x+5(-8x+9)=0
je penses que ::))) la suite est>>
4x+5=0 ou -8x+9=0
4x=-5 -8x=-9
x=-5/4 x=-9/8
---------------------------------------------------------------------------------------------
formule= (a-b)²= a²-2ab+b² donc on a:
(5x-4)²=16x²
25x²-(2*4*5x=) 40x + 16= 16x²
=25x²-40x+16=16x²
25x²-40x=16x²-16
/(-40) }
25x²-x²=-40
et /x² }
x²-x²=-40/25
x= 1,6
PS POUR CELUİ LA J'Aİ GALERE DU COUP JE SUİS PAS SURE NON PLUS
-----------------------------------------------------------------------------------------------------------------
ça devient dur mais j'essaie quand meme :
64x²-48x+9=0
64x²-48x=-9
64x²+x=-9+48=39
x²+)39/64
x=racine carrée de 39/64=0,8
je suis sur pour le debut et moins pour les 2 dernieres masi j'espere t'avoir aidé :)