Iklan

Pertanyaan

Nilai-nilai x yang memenuhi pertidaksamaan ∣ x − 2 ∣ ≥ 2 x + 20 ​ adalah ...

Nilai-nilai x yang memenuhi pertidaksamaan adalah ...

  1. begin mathsize 14px style negative infinity less than straight x less or equal than negative 2 union 2 less or equal than straight x less than 10 end style 

  2. begin mathsize 14px style negative infinity less than straight x less or equal than negative 2 union 2 less or equal than straight x less than infinity end style 

  3. begin mathsize 14px style negative infinity less than straight x less or equal than negative 2 union 8 less or equal than straight x less than infinity end style  

  4. begin mathsize 14px style negative 10 less than straight x less or equal than negative 2 union 8 less or equal than straight x less than infinity end style 

  5. begin mathsize 14px style negative 10 less than straight x less or equal than 2 union 8 less or equal than straight x less than infinity end style 

Ikuti Tryout SNBT & Menangkan E-Wallet 100rb

Habis dalam

02

:

21

:

20

:

32

Klaim

Iklan

M. Robo

Master Teacher

Jawaban terverifikasi

Pembahasan

Syarat dalam akar tak negatif, maka: Kuadrat pertidaksamaan: Buat garis bilangannya: Himpunan penyelesaiannya: {x ≤ -2 atau x ≥ 8} … (Solusi kedua) Irisan kedua solusinya, maka: = {-10 ≤ x ≤ -2 atau x ≥ 8} atau bisa ditulis =

Syarat dalam akar tak negatif, maka:

begin mathsize 14px style square root of 2 straight x plus 20 end root greater or equal than 0 rightwards arrow 2 straight x plus 20 greater or equal than 0 rightwards arrow straight x greater or equal than negative 10 space... space open parentheses solusi space pertama close parentheses end style 

Kuadrat pertidaksamaan:

begin mathsize 14px style open parentheses open vertical bar straight x minus 2 close vertical bar close parentheses squared greater or equal than open parentheses square root of 2 straight x plus 20 end root close parentheses squared open parentheses straight x minus 2 close parentheses squared greater or equal than 2 straight x plus 20 straight x squared minus 4 straight x plus 4 greater or equal than 2 straight x plus 20 straight x squared minus 6 straight x minus 16 greater or equal than 0 open parentheses straight x plus 2 close parentheses open parentheses straight x minus 8 close parentheses equals 0 straight x equals negative 2 space atau space straight x equals 8 end style  

 

Buat garis bilangannya:

Himpunan penyelesaiannya: {x ≤ -2  atau x ≥ 8} … (Solusi kedua)

Irisan kedua solusinya, maka:
= {-10 ≤ x ≤ -2 atau x ≥ 8}  atau bisa ditulis
= begin mathsize 14px style open curly brackets negative 10 less or equal than straight x less or equal than negative 2 union 8 less or equal than straight x less than infinity close curly brackets end style 

Perdalam pemahamanmu bersama Master Teacher
di sesi Live Teaching, GRATIS!

6

Iklan

Pertanyaan serupa

Semua nilai x yang memenuhi pertidaksamaan x 2 + 2 x − 3 > 0 dan |6 - x| > 3x adalah ...

1

0.0

Jawaban terverifikasi

RUANGGURU HQ

Jl. Dr. Saharjo No.161, Manggarai Selatan, Tebet, Kota Jakarta Selatan, Daerah Khusus Ibukota Jakarta 12860

Coba GRATIS Aplikasi Roboguru

Coba GRATIS Aplikasi Ruangguru

Download di Google PlayDownload di AppstoreDownload di App Gallery

Produk Ruangguru

Hubungi Kami

Ruangguru WhatsApp

+62 815-7441-0000

Email info@ruangguru.com

[email protected]

Contact 02140008000

02140008000

Ikuti Kami

©2024 Ruangguru. All Rights Reserved PT. Ruang Raya Indonesia