Articles
Register
Sign In
Search
Jelly19
@Jelly19
May 2019
1
63
Report
Coucou, besoin d'aide niveau lycée 2nd
On considère les expressions suivantes :
A = (x-2)(2x+5) +4(x-2)(x-1)
B = (3x-4) - 2(3x-4)²
C = x² - 2x + 1 -(2x - 5)²
D = x(6x + 5) + 4(x-4)x
1 : développer puis réduire ces quatre expressions.
2 : Factoriser ces quatre expressions.
Merci bcp d'avance
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
maudmarine
Verified answer
Bonsoir,
1 :
Développer puis réduire ces quatre expressions
.
A = (x-2)(2x+5) +4(x-2)(x-1)
A = 2x² + 5x - 4x - 10 + 4 (x² - x - 2x + 2)
A = 2x² + 5x - 4x -10 + 4x² - 4x - 8x + 8
A = 2x² + 4x² + 5x - 4x - 4x - 8x - 10 + 8
A = 6x² - 11x - 2
B = (3x-4) - 2(3x-4)²
B = 3x - 4 - 2 (9x² - 24x + 16)
B = 3x - 4 - 18x² + 48x - 32
B = - 18x² + 3x + 48x - 4 - 32
B = - 18x² + 51x - 36
C = x² - 2x + 1 -(2x - 5)²
C = x² - 2x + 1 - (4x² - 20x + 25)
C = x² - 2x + 1 - 4x² + 20x - 25
C = x² - 4x² - 2x + 20x + 1 - 25
C = - 3x² + 18x - 24
D = x(6x + 5) + 4(x-4)x
D = 6x² + 5x + (4x - 16)x
D = 6x² + 5x + 4x² - 16x
D = 6x² + 4x² + 5x - 16x
D = 10x² - 11x
2 :
Factoriser ces quatre expressions
.
A = (x-2)(2x+5) +4(x-2)(x-1)
A = (x - 2) (2x + 5 + 4x - 4)
A = (x - 2) (2x + 4x + 5 - 4)
A = (x - 2) (6x + 1)
B = (3x-4) - 2(3x-4)²
B = (3x - 4) (- 6x + 9)
C = x² - 2x + 1 -(2x - 5)²
C = (x - 2) (- x + 2 - 2x + 10)
C = (x - 2) (- 3x + 12)
0 votes
Thanks 0
More Questions From This User
See All
Jelly19
January 2021 | 0 Respostas
Responda
Jelly19
January 2021 | 0 Respostas
Responda
Jelly19
January 2021 | 0 Respostas
Responda
Jelly19
May 2019 | 0 Respostas
Responda
Jelly19
May 2019 | 0 Respostas
Responda
Jelly19
May 2019 | 0 Respostas
Responda
Jelly19
May 2019 | 0 Respostas
Responda
×
Report "Coucou, besoin d'aide niveau lycée 2nd On considère les expressions suivantes : A = (x-2)(2x+5) +4(.... Pergunta de ideia de Jelly19"
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
Verified answer
Bonsoir,1 : Développer puis réduire ces quatre expressions.
A = (x-2)(2x+5) +4(x-2)(x-1)
A = 2x² + 5x - 4x - 10 + 4 (x² - x - 2x + 2)
A = 2x² + 5x - 4x -10 + 4x² - 4x - 8x + 8
A = 2x² + 4x² + 5x - 4x - 4x - 8x - 10 + 8
A = 6x² - 11x - 2
B = (3x-4) - 2(3x-4)²
B = 3x - 4 - 2 (9x² - 24x + 16)
B = 3x - 4 - 18x² + 48x - 32
B = - 18x² + 3x + 48x - 4 - 32
B = - 18x² + 51x - 36
C = x² - 2x + 1 -(2x - 5)²
C = x² - 2x + 1 - (4x² - 20x + 25)
C = x² - 2x + 1 - 4x² + 20x - 25
C = x² - 4x² - 2x + 20x + 1 - 25
C = - 3x² + 18x - 24
D = x(6x + 5) + 4(x-4)x
D = 6x² + 5x + (4x - 16)x
D = 6x² + 5x + 4x² - 16x
D = 6x² + 4x² + 5x - 16x
D = 10x² - 11x
2 : Factoriser ces quatre expressions.
A = (x-2)(2x+5) +4(x-2)(x-1)
A = (x - 2) (2x + 5 + 4x - 4)
A = (x - 2) (2x + 4x + 5 - 4)
A = (x - 2) (6x + 1)
B = (3x-4) - 2(3x-4)²
B = (3x - 4) (- 6x + 9)
C = x² - 2x + 1 -(2x - 5)²
C = (x - 2) (- x + 2 - 2x + 10)
C = (x - 2) (- 3x + 12)