Articles
Register
Sign In
Search
ArkAnge
@ArkAnge
May 2019
1
110
Report
DM de math j'ai vraiment besoin d'aide ;)
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
Commentaires (1)
1) a=1 et b=5
A = 1/4 ((1+5)²-(1-5)²) = 1/4 (6²-(-4)²) = 1/4 (36 - 16) = 1/4 (20) = 20/4 = 5
2) a=-2 et b=-3
A = 1/4 ((-2+(-3))²-(-2-(-3))²) = 1/4 ((-5)²- 1²) = 1/4 (25 - 1) = 1/4 (24) = 24/4 = 6
Je remarque que dans les 2 cas précédents, on a : A = a * b
1*5=5 et (-2)*(-3)=6
3) 1/4 ((a+b)²-(a-b)²)
= 1/4 ((a²+2ab+b²)-(a²-2ab+b²))
= 1/4 (a²-a² + b²-b² + 2ab + 2ab)
= 1/4 (4ab)
= (4ab)/4
= ab
2 votes
Thanks 1
ArkAnge
Je te remercie infiniment ;)
More Questions From This User
See All
ArkAnge
January 2021 | 0 Respostas
Besoin d'aide pour mon DM de math merci :)
Responda
ArkAnge
January 2021 | 0 Respostas
Responda
ArkAnge
January 2021 | 0 Respostas
Responda
×
Report "DM de math j'ai vraiment besoin d'aide ;).... Pergunta de ideia de ArkAnge"
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
A = 1/4 ((1+5)²-(1-5)²) = 1/4 (6²-(-4)²) = 1/4 (36 - 16) = 1/4 (20) = 20/4 = 5
2) a=-2 et b=-3
A = 1/4 ((-2+(-3))²-(-2-(-3))²) = 1/4 ((-5)²- 1²) = 1/4 (25 - 1) = 1/4 (24) = 24/4 = 6
Je remarque que dans les 2 cas précédents, on a : A = a * b
1*5=5 et (-2)*(-3)=6
3) 1/4 ((a+b)²-(a-b)²)
= 1/4 ((a²+2ab+b²)-(a²-2ab+b²))
= 1/4 (a²-a² + b²-b² + 2ab + 2ab)
= 1/4 (4ab)
= (4ab)/4
= ab