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|2×+6|=|×-4| help yg nomor 2 pakai cara 1 dan 2 seperti nomor 1​

|2×+6|=|×-4|

help yg nomor 2 pakai cara 1 dan 2 seperti nomor 1​

|2×+6|=|×-4| help yg nomor 2 pakai cara 1 dan 2 seperti nomor 1​

Nilai Mutlak

 

cara 1

|2x + 6| = |x – 4|

2x + 6 = x – 4

2x – x = -4 – 6

x = -10

 

2x + 6 = -(x – 4)

2x + x = 4 – 6

3x = 2

x = 2/3

 

Nilai x :

-10 dan 2/3

 

cara 2

|2x + 6| = |x – 4|

(2x + 6)² = (x – 4)²

(2x + 6)² – (x – 4)² = 0

(2x + 6 + x – 4)(2x + 6 – (x – 4)) = 0

(3x – 2)(x + 10) = 0

x = 2/3 atau x = -10

 

Nilai x :

-10 dan 2/3

 

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Baca Juga :  Complete the sentences with a form of the verb in parentheses. Three hundred and fifty years ago, people (1. make) /made/ their own clothes. They (2. have, not) _____ machines for making clothes. There (3. be, not) _____ any clothing factories. People (4. tear) _____ homemade clothes that were sewn by hand. Today, very few people (5. make) _____ their own clothes. Clothing (6. come) _____ ready-made from factories. People (7. buy) _____ almost all their clothes from stores. The modern clothing industry (8. be) _____ international. As a result, people from different countries often (9. wear) _____ similar clothes. For example, people in many different countries throughout the world (10. wear) _____ jeans and t-shirts. However, some regional differences in clothing still (11. exist) _____ for instance, people of the Arabian deserts (12. wear) _____ loose, flowing lobes to protect themselves from the heat of the sun. In parts of Northern Europe, fur hats (13. be) _____ common in the winter. In the future, there (14. be, probably) _____ fewer and fewer differences in clothing. People throughout the world (15. wear) _____ clothes from the same factories. (16. We all, dress) _____ in the future? TV shows and movies about the future often (17. show) _____ everybody in a uniform of some kind. What (18. you, think) _____? Number 18