Articles
Register
Sign In
Search
Mereraab
@Mereraab
April 2020
2
91
Report
As raizes das funções f(x) = x ao quadrado -5x + 4 definida de R em R:
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
Guther
Verified answer
X² - 5x + 4 = 0
a = 1 b = - 5 c = 4
∆ = b² - 4 . a . c
∆ = (- 5)² - 4 * 1 * 4
∆ = 25 - 16
∆ = 9
x =
- b +\- √∆
x =
- (- 5) +\-
√9
2 * 1
x =
5 +\- 3
2
x' =
5 + 3
2
x' = 8
÷ 2
x' = 4
x" =
5 - 3
2
x" = 2
÷ 2
x" = 1
Resposta: {4, 1}
0 votes
Thanks 1
mozarthrocha
Verified answer
X²-5x+4=0
Δ = b²-4ac
Δ = (-5)² - 4.1.4
Δ = 25 - 15
Δ = 9
x = (-b+/-√Δ)/2a
x = (-(-5)+/-√9)/2.1
x = (5+/-3)/2
x' = (5+3)/2 --> x' = 8/2 --> x' = 4
x" = (5-3)/2 --> x" = 2/2 --> x" = 1
S:{1;4}
0 votes
Thanks 0
More Questions From This User
See All
mereraab
July 2022 | 0 Respostas
Responda
mereraab
July 2022 | 0 Respostas
Responda
mereraab
April 2022 | 0 Respostas
Responda
mereraab
April 2022 | 0 Respostas
Responda
mereraab
April 2022 | 0 Respostas
Responda
mereraab
October 2021 | 0 Respostas
Responda
mereraab
February 2021 | 0 Respostas
Responda
mereraab
October 2020 | 0 Respostas
Responda
Mereraab
May 2020 | 0 Respostas
Calcule os logaritmos a) b)
Responda
Mereraab
May 2020 | 0 Respostas
Responda
Recomendar perguntas
Deividyfreitas
May 2020 | 0 Respostas
BlackShot
May 2020 | 0 Respostas
Vanessakellen
May 2020 | 0 Respostas
Guiduarter
May 2020 | 0 Respostas
Mrzaine
May 2020 | 0 Respostas
O QUE SERIA AUTONOMIA?
Grazifer
May 2020 | 0 Respostas
Joazinho
May 2020 | 0 Respostas
a palavra rapidez formou se de qual derivacao
Celiana
May 2020 | 0 Respostas
Joazinho
May 2020 | 0 Respostas
Anatercia
May 2020 | 0 Respostas
×
Report "As raizes das funções f(x) = x ao quadrado -5x + 4 definida de R em R:.... Pergunta de ideia de Mereraab"
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
X² - 5x + 4 = 0a = 1 b = - 5 c = 4
∆ = b² - 4 . a . c
∆ = (- 5)² - 4 * 1 * 4
∆ = 25 - 16
∆ = 9
x = - b +\- √∆
x = - (- 5) +\- √9
2 * 1
x = 5 +\- 3
2
x' = 5 + 3
2
x' = 8 ÷ 2
x' = 4
x" = 5 - 3
2
x" = 2 ÷ 2
x" = 1
Resposta: {4, 1}
Verified answer
X²-5x+4=0Δ = b²-4ac
Δ = (-5)² - 4.1.4
Δ = 25 - 15
Δ = 9
x = (-b+/-√Δ)/2a
x = (-(-5)+/-√9)/2.1
x = (5+/-3)/2
x' = (5+3)/2 --> x' = 8/2 --> x' = 4
x" = (5-3)/2 --> x" = 2/2 --> x" = 1
S:{1;4}